Too late in the evening for me to go deep into lichery at the moment, but I'll just emphasize that I want this to be a bigger deal for any "transformation" sort of event. Vampire, lycanthrope, lich, whatever. There should be fundamental changes, not just a new character model and some stat buffs that could just as easily be gained with equipment and spells. Things like boosts to "invisible" abilities you don't normally change, like a werewolf increasing bashing or lift/throw limits, beyond any boosts to strength. Imagine the extra feel of savagery from a werewolf if it ripped through the door, tore a resident's throat out, and hurled their corpse across the room with enough force to shatter furniture.
Hehe well then maybe give it a look when you're more awake again because I did suggest it to really be different than just a few stats altered.
Simulating different abilities:I have been thinking about how different physical abilities could be simulated in game. For example you can't simulate better eyesight with giving you a longer view distance, that both wouldn't work out from a technical standpoint and from “fairness”, giving you a shorter maximum view distance despite being able to run more.
But here are a few ideas how those could work:
Better eyes sight:You can have a natural “zooming” ability, this could greatly help archers.
Better sense of smell:You can “test” the air giving you a good indication who/what is around in your near area. Could also tell fresh from stale or rotten ingredients apart better.
Better hearing:A directional microphone like effect, you can spy on people from a distance. Could also hear things through walls easier.
Claws:You can use them in combat to cause slashes but also allows you to easier climb rough or soft surfaces like walls with large cracks or wood.
Better sense of taste:Eating ingredients for potions could give you an idea of their effects faster.
In the same breath I could also suggest I don't really like giving the different races a skill boost, I'd really much rather see them have different attribute modifiers (like orks and nords are able to gain muscle faster, high elves and bretons can gain intelligence faster etc.). Your skills could be fully determined by what YOU set in the beginning or your “past entires” during character creation but there could be light modifiers for your chosen race too. That way it wouldn't railroad you as much from the beginning but still gives a few directions which race has more natural abilities to fit into what line of development.
Additionally with the above mentioned simulated abilities it could explain better why which race is better at certain things. A Bosmer for example wouldn't naturally have a better ability to shoot a bow, but they have better eyesight (simulated as being able to zoom) which gives them a better ability to aim on a distance. If one never held a bow in his hands ever before he won't be a good archer though no matter how good his eyes are.