Platemail is light. WUHHHH? It is. It's lighter than Chainmail. Chainmail is one piece which draqes over the head/body/or is a skirt or one piece of pants.
Platemail, however is made up of over 100+ pieces which only weigh 2 pounds, the weight is distributed across the body. Modern Knights, (RPer's) can do acrobatics in their platemail, they can do flips, parkour. Chainmail is only one piece of 40 pounds on your shoulders or weighing on your head or legs.
Knights who are trained in their armour don't even notice their armour, it's like a second skin to them. Knights can mount horses with one jump. I'm not even joking here, or boosting.
So this shows, that knights can SNEAK. Knights aren't SLOW, and are FLEXIBLE.
2 - Combat.
Oblivion was amazing. For its time. Now that standards have increased, looking back on Oblivion you can see flaws and problems. Mainly, the Animations, Lighter than air Ragdolls, and.. The Combat.
First off, the enemies swarm you and constantly wack at you like maniacs. From the front, from behind, from the sides. Fighting more than one opponent was not fun. There has to be a system where the enemies take turns, ala Assassins Creed, and you can efficiently fight. Well, that's not realistic you say? True, but also not realistic is 5 people wacking at you while you heal and slowly and tediously hurt them until they all die. One because if there were 5, one from behind will just stab you, game over. Reload. Until there is a system which can effectively allow more than one people to attack, this feature must be thrown out and the Assassins Creed system must be implented. I can see some ways it can be effective if there were 2 or 3. But it would be chaotic.
Also, the constant wacking your character does when he attacks in Oblivion wasn't fun. There needs to be variety, counters, parries, shield bash, kicks, hilt smashes. Many games have accomplished this, and with the new system for Skyrim, it can be glorious.
Also why is it enemies float in the air when they die in Oblivion? Enemies need to be heavy and fall down hard.
Thats all.