I'll only comment on the ones I don't agree with:
Speed Eggwars: I think Eggwars is a bad game in general, but in my opionion the games after the speed was removed were a little less annoying.
Teaming warning: That would be annoying and I don't think it would change much. The punishment for teaming should be a lot more severe for repeated offenses (exponential ban duration).
Voting rewards: I don't care if people vote. I don't even know how many people actually join the server becasue they see it in the server lists, so I can't really decide on it.
Autolock: Better than nothing, but I'd prefer just to show a warning on old threads but allow people to comment if the topic is still relevant.
1.8: I don't care about 1.8 at all and I think many people play on this server for that reason. In my opinion they should focus on getting the 1.9 games to 1.12.1 instead.
Bomber kit: I think that would make it too easy. They should nerf the op kits like swordsman and iron golem instead to balance kits.
Clans in Assassination: Assassination is based on completely unfair fights, but I think the game would be better without any teams. I would not want to give the team in a 2v1 situaton even more of an advantage.
Rewards after death: I think it's fair if you don't get the reward. It woudn't be a problem either, but I'd prefer to keep it as it is, without any particular reason.