maybe the whole Acrobatics skill tree would be nice: 1. you can attack while jumping/you can power attack while jumping 2. while you don't use shield, you can dodge an attack by hitting the button to move into that direction 2 times quickly 3. you can climb on walls (wallhack - though some really good animating and scripting would be needed. But it would be great for thieves and assassins) 4. attacking at the same time enemy is attacking you will result into parry 5. after parrying, your next swing is faster 6. ultimate skill - pushing space right after parry will not make you jump, but kick your enemy, knocking him back (or knocking him down if he was staggered)