The only things I really want are the followning:

1. A dismemberment mod. Basically if you slice and dice a target then it would be nice to have a realistic show of this: Hit a man's limb with an edged weapon and reduce his HP by 1/6th in one go then his limb comes off.

2. A back pack mod. A back pack, pack mule, and horse and cart would be nice so that you can carry more stuff. It really feels wrong the fact that you carry things and nothing you are carrying shows. Where is all that gear? You could have magical bags that are bigger on the inside than the out, or non-magical ones that only hold a certain capacity in size rarther than weight. And that's where the mule or horse and cart would come into their own. It would also force characters to be more careful about traveling on roads instead of going in straight lines across country. They would not be able to do so much without leaving their mules and carts behind. Or, hire guards to travel with you to protect your gear.