I'll direct some of my SG mates over here -- we have an ongoing "ladder" PvP tourney within our SGs, and we have a lot of fun with it. I'm sure at least a few will want to try out a larger base on something like this. 
Leader of Legion of Valor/Fallen Legion (Victory server)
http://legionofvalor.guildportal.com / http://fallenlegion.guildportal.com
StainedGlassScarlet - L50 Spines/Inv Scrapper | Badges: 1,396
Avatar detail taken from full-size piece by Douglas Shuler here
As long as we're talking the arena and we can turn off most/all of the gimp options, I am game. We could even try pentads or something similar where people could try to achieve the precious badgez without just rolling over and dying for each other.
Sounds like fun, count me in.
Also, I'm the guy who's currently running our SG based PvP ladder, as mentioned by Eric above, so if you need any help or advice on how to set things up or run it, I'll be more than happy to share what limited knowledge I may have...
I have been talking with PvPers about getting a PvP league started. A few other servers are doing it and i think its a good idea. So at this time we are going see how many people interested.