Bring up the console and type give weapon_melee. That will give you fists and allow you to punch. Then in the console type G_debugmelee 1. You'll punch at a slower rare but you'll be able to do melee combos and katas. You'll also be able to kick also with alt attack. In order to do a melee kata press attack and alt attack at the same time, if your moving forward when you kata you'll do a flip kata. If your holding backwards when you kata you'll do a choke and throw move. If you just stand still while you kata you'll do a triple punch combo. Of course instead of doing the commands I said above you can get all the moves and the melee weapon instantly by just typing iknowkungfu but that will give you lvl 3 force powers.
Your auto-blocking is in vain! Only SP source code modification can allow you to block my desann-style attacks without being staggered now!