Something that could help would be to allow players to choose what server they play on. The server could then establish rules against tactics that are regarded

Something that could help would be to allow players to choose what server they play on. The server could then establish rules against tactics that are regarded as effective but unsportsmanlike. Casual servers could also choose to implement more aggressive rebalancing systems between rounds. Finally, players could choose to select servers that they know to have a more casual community.