I don't live is Oz, so it would be pretty difficult for me, but if I was pretty serious about it, I would certianly enter, I just don't have the time to spend building a "kick the f*ck out of" machine.
If they did that, pretty soon someone will try to cram an m1 tank in the arena. Then you'll get robots with premade grenade launchers strapped to them.
Wheres the skill in the fabrication??? actually what fabrication???