Can understand why people don't like to play against pre-made. But at times it feels more like an excuse to the question of why people don't really trying their best in pvp. My answer would be they just don't want to play it in the first place, but do so because of roulette's rewards and pvp-pass.

So with such atmosphere can't really say much against banning said premade parties. But think the rest on the list is too much. After all, pvp is 24 vs 24 vs 24, so some semblance of team-play should be available. And it's hard to be a team without at least a little commanding and organising. So if some people feel like trying to lead - good luck to them.