I know it has been suggested countless times before but it needs to be added. I recently played xbowman and imagined myself beeing able to crouch in battle, or take cover from range, it would be awsome if it was reality!
There are already couple of other mods with feature crouching, such as persistent world (i think their code for the crouching is OSP but it still needs confirmation, anyway heres the link:
http://forums.taleworlds.com/index.php/board,184.0.html)
Heres a pic of the position in PW (sry for shitty graphics!)
In PW you are also able to crouch with your pike and stop horse automatically without attacking, ill try finding a video of it or make one myself. Would be awsome if it was added to!
Anyway theres are my suggestions, gimme looms and dont hate!
All credit goes to Ray lin for this awsome animations: