Its weird and annoying to have a certain biomes next to each other. For example
Desert next to Taigas
Plains next to Desert
Tundra next to Temperate Forest
I would suggest Minecraft developers to have smooth biome transitions that compliment the biomes. Biome transitions are would make minecraft biomes feel more realistic. Its ugly having a desert biome next to plains biome.
Now terrain generation is also another suggestion developers should look at. They should make the terrain more smoother. Like a nice smooth slopes. The terrain in game isnt bad but i do feel like it needs a update to make it smoother.
Hopefully some can agree I would love to settle in some better smoother terrains in survival.