Phantoms and bees are good mobs, and if new things feel like mods then doesn't everything coming out of these updates feel like a mod? Wile Mojang isn't that good when it comes to actually doing things, what does end up in the game is actually good.
As for the mobs themselves the copper golem would be a use for copper, but it feels redundant, the allay has the most meat to it, It actually does useful things for you.
Overall, Mojang please stop it with the mob and biome votes and do something else that actually gets the community involved, if you come up with ideas you think fit the game, just put them in, everyone is happy that way.
