I think what really needs to show up in the next Jk game is a more interactive saber combat. Blocking your opponents strikes should be your main defense, not jumping all over the place like a ping pong ball on crack. That and you should have to charge your jump a bit like in JK 1, that makes more sense since normally people have to bend their knees and get ready to leap before they do it. And make the special moves look somewhat practicle. It's silly to see someone killed from that butterfly move of the staff. Just my two cents.
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