I know I'll get a lot of comments about different structures, so here's two lists. Ones I know I won't do, and ones that are up in the air (basically a maybe.)



Maybe

Shipwrecks
End City
Woodland Mansion
Desert Village
Ancient City
Rest of the Nether Fortress
Ocean Ruins


Won't happen

Trail Ruins
Brick Pyramid
Bastions
Rest of the Stronghold
Trial Chambers
1.14 Villages
Ruined Portal
Mineshaft