Remember all those request of either being able to block in morrowind or not miss your attacks? It's really stupid in my opinion since it makes agility useless, and blocking, looking at blocking enhanced is way overpowered since it lets you block every one of your ennemies attack.
I'd like to see a mod where you could control your defensive options. So when combat starts you have more to do than just click left mouse.
Basically, whenever youre not pressing right mouse button, your agility is theoretically zero and ennemies hit you every time, when you are pressing it you are given a chance to dodge attacks based on your normal agility.
OR
Whenever your pressing your right mouse, you give yourself a shield that's based on your agility, and when I say shield I actually mean something like a shield spell that mitigates a percentage of the damage done when enemies are attacking you and the amount mitigated is based on your ability.
It wouldn't be a huge chance to the game, but it could be one of those little things that'll make the game a little more interactive.