I have to agree strongly with R3ptile that playing multiple gametypes or doing it in something other than CTF is a very risky and bad idea. If other styles of changes were to be played it would have to be worth fewer points or something.

On how to keep statistics and such. I don't know if many people remember iCeD's dedicated server but he used Link's chat capture program and a some simple text editing commands (regular expressions would make this really easy I'm sure) to extract who was killed, roasted, scored, captured etc. Doing something like this again wouldn't be very hard and could add a lot to the website. If this tournament happens again we should have the servers running a JJ2 chat capture so these statistics can be easily generated after the match.