1: Maybe, but we have to see about this if 3 is implemented
2: Not sure if a plugin could do that, probably not
3: Long range(100 blocks) TNT cannon wars. Basically, M1's paradise.
Relation of 1 and 3: if we have specialized events, ten there's no point in 1. If we have specialized ares, in which TNT combat is allowed, then 1 can be applied.
This is a massive advantage over new players. Aggression gets new members all the time. A faction with a bunch of cpl+'s would easily take out their faction.