I like the 2nd one since we played it! BUT! I would not prefer the different groups, I would prefer a whole like in a square set.
It is quite easy to handle, If those who don't listen and start to riot, will get killed by GM command.
Would be best to have a map that has a dirt path like a rectangle and have people like up in that path. No items usage are allowed (Ygg/GTB).
* = Players
@ = GM
* * * * *
* *
* @ *
* *
* * * * *