Things to update in 1.21

Here are some things i would like to see in 1.21, it would be cool if the wandering trader was updated to trade 1.20 item and even armor trims. Something else i would like to see is a new type of villager, maybe a beekeeper, or a miner, and also potentially new village types like swamp villages, jungle villages, or cherry grove villages. Another thing i would like to see is updated super flat, not normal superflat though, but the overworld setting, i would like to see it be able to generate mineshafts, caves, trail chambers, the stronghold, and also generate other biomes besides plains, and also get a deepslate level. So those are all my ideas for 1.21.