Stijn is right. Adding new movement options would be the same as in some shooter games - easy for pro's to learn and pwn,hard for newbies. I had problems in UT 2004 because of that,couldn't do walljumping while the better players used to spin around every wall and pwn me with increased accuracy.

With this,the last thing we need is an aiming system and gaming hardware required to play JJ2.

(btw what's Lithium's option)