You can't do perfect single elimination without having it in power of 2. No-show will immediately screw up the system heavily. The closest I can make is probably 4 or 6 battles-point system (5 fight with odd number of participant results in chaos, but today we luckily have 10), then top 4 enter single elimination rounds. The two who lost in the first round of the single elimination fight each other to compete for 3rd place. That's the closest I can get (and it ensures perfect power of 2.)
Currently I'm leaning to this choice for tournament setup: 4 battle by random each. 4 with highest points enter single elimination ladder.
@Krim- besides the problem of having 2 GMs to host an event instead of 1, you have problems called "such a map with 2 arena and a spectator area in the middle does not exist" unless you krimstyle Borf to handle over his almighty map program to us XD;
I don't want the PvP deposit fee to be overly staggering to discourage participation in general... Maybe 300-500k area only. The screw-up today was a human error and my formula should still work as long as it's only 4 fights.
@Aaronock: don't even go to banning of only some specific cards. We allow all of them.