There was a discussion on UESP.net forums to which i contributed my ideas that are very similar/the same.

Werewolf: if its in the game, adding these quests would add immersion and awesomeness. OK so you've been bitten and your infected, you have two choices, live with it, or try to find a cure, but either way your stuck with it for a while so, why not give you some quests to enjoy your new found powers? ok so whether u choose to stay a werewolf or try to become human, the first three quests are the same, basically trying to track down someone who can cure you. Then u find a "Pack" of werewolves, who are working for Hircine to do something bethesda wants him to want you to do. During these quests you find items that you can use while in werewolf form, armor that lowers your damage received from silver weapons, and finally "fist weapons" that use unarmed skill to determine damage and are effected by the unarmed perks (if there are any) ok so finally u do all the quests you've found all the artifacts and you go back to Hircine and he offers you a choice, to return you to humanity or stay and lead his werewolves. Depending on what you chose you are either cured or given an item that allows you to change whenever you want, as long as you have the disease (as a pre-requisite).

Werewolf Combat: this is something that should be included in the game, anyone who has ever played AvP as an Alien loved two things about it, Headbite and Pounce. In this case the "Headbite" would be the finisher for the werewolf, where he crushes the baddies head with his jaws. and the "Pounce" would be a leap that replaces dragon shouts while in Werewolf Form, if done from stealth, the Pounce would do 5X bonus damage, which would be equal to say a bow shot from stealth, which if i have read correctly, could possibly one hit some people if u hit them in the right places. so for werewolves no dragon shouts while in the form, but u get a pounce, increased unarmed skill, increased block/parry/damage resistance(only one of these 3), increased sneak, and night eye and detect life as well as a spell similar to the clairvoyence spell as seen in the G4tv gameplay trailer. Another power would be an invisibility spell. The Longer you go without feeding, the less powerful these benefits are, you have to be active as a beast to become powerful, the more you feed, the stronger you become instead of the opposite like for vampires in oblivion. Lycanthrope should have 4 "levels" where at level one u get 5 skill points to each effected skill and night eye but take 50% bonus damage from silver, level 2 you get 10 to the effected skills, detect life as well as nighteye when in the form and take 100% bonus damage from silver, level 3 you get 15 to each of the effected skills and the "pounce" (using dragon shout button, the powers which u cannot use while in this form, and does nothing until level 3 lycanthrope while in the form)night eye and detect life, and take 150% bonus damage from silver. Level 4 you get 25 to the skills, the pounce, nighteye and detect life (toggled on when in the form), a minor power clairvoyence-like spell, and a major power "Ghostwalk" (60 sec invis unless u attack or use skills) and take 200% damage from silver, however if u have all of the hircine items that would be useable while in werewolf form ( an unarmed weap, bracers, pants, chest, helm, no boots but any rings are useable, and the amulet slot would be taken by the "Gift of Hircine" which allows you to cast a spell that brings out your werewolf form) with all of them they reduce you weakness to silver by 50% so if u have all of the items, you only take 25% bonus damage from silver at level 1, 50% at level 2, 75% at level 3 and 100% bonus damage from silver at level 4.
And if you lived in an area like skyrim, i think every guard would have silver arrows in case they saw a werewolf, and at higher levels like 20+ for player give the guards enchanted silver arrows with paralyze for 3 sec or something. ALSO: left hand/right hand attack normally, but clicking both at the same time causes u to bite the target causes bleed damage as your 2 hand power attack

Good ideas !

Meh... If I remember correctly it takes some time before you get the full effect of the decease, this is the time you got to cure yourself. And if you've played bloodmoon you will know that you don't need armour as you are quite powerful already.

good ideas i like em even if they dont make it into skyrim i hope theyll be in dlc or expansiones

Vampires. you get bit, you want to find someone to cure you, or u want to stay a vampire, u seek out the elusive clan of vampires that are said to be able to move through solid ice, a power that could be used to help u get special vampire-only items that reduce sun damage, so much that you only take about 1 damage per hour while in the sun if your a level 1 vampire, 10 damage per hour (still highly manageable) while at maximum vampire power.

Vampire Combat: vampires can still speak so, they would retain the ability to use dragon shouts, i think vampires should get the following bonuses, marksmen + 5 (you have a much steadier hand when your dead), speed +10, 1h/2h +5, block +5, or instead of combat skill increases, vampires get a bonus combat perk, that increases holstering/unholstering and attack speed by 25% for all combat skills (bow/1h/2h/unarmed) at maximum "level" vampires still gain power the longer they dont feed, or by feeding more, up to you guys. So at vampirism level 1; 10% IAS (increased attack speed), night eye, and a paralyze on touch spell 3sec duration(once per day). vampirism level 2; 15% IAS,night eye, detect life(30ft), paralyze on touch 5 sec(once every 8 hours), 10% bonus damage to paralyzed,but take sun damage(1%life/sec), a minor power frost spell. level 3: 20% IAS,night eye,detect life (60ft), paralyze on touch 5sec(once every 4 hours), 15% bonus damage to paralyzed targets, sun damage(2%life/sec), a more powerful frost spell(minor power once per day).level 4 vampirism; 25% IAS, night eye, detect life, paralyze on touch 7sec (once per hour in game), 20% bonus damage to paralyzed/immobilized, extreme sun damage(3-5% life per sec), weakness to fire, greater power toggles no clipping aginst ice(so you can move through it, only in certain areas) and spell immunity for 20 seconds(fire/frost/lightning and sun damage) and minor power frost spell useable once per hour. level 2 vampires are also 10% more vulnerable to fire level 3 15% level 4 25%

I sorta doubt there will be a werewolf pack in the game. Let alone werewolves. But if there are werewolves, then I would like for it to be simple. A mixture of Bloodmoon and Daggerfall. I really wouldn't mind quests for werewolves, but I would still enjoy the game if they are in.

Werewolf form: You have to kill at least once person to gain new wolf abilities like in Bloodmoon; Werewolf resistance(Diseases), Spirit of the Wolf(Regain health slowly after injuries) and Eye of the Wolf(Detect prey).

Human form: New perks such as stronger attacks, faster moves and stronger health, disease resistance effects. Etc.

yea i forgot about that, perks instead of combat would be better, like the bite power attack negates defence (crushing armor) and claws cause bleed damage like axes instead of increasing the skills that would be better i think

i know

That was alot of words.

Good ideas.