Acrobacy could have more moves at later levels such as side flips, wall flips, foward flips and other manuevers that could be used for dodging and other things. also crouch ability would be helpful and maybe a tree climbing ability?
combat skills could have more combos at later levels and they might be combined with acrobacy
I don't if these would be the first things to add in the game but maybe in the future versions such as 1.3 or later.
i've been a game designer in the past and i think that these thing would be appreciated by more people than just me.
Dont get me wrong the game is fantastic! but these would make it even better