Couple things to say is...
Kompresser, read this: V21 is the worst idea in BL history, Its getting rid of all terrain and interriours. RPGs will all die!
You are definitely handicapped, no doubt. Sincerely because the new update isn't even v21 if I'm correct and RPG's can still survive without interiors/exteriors.
Second of all, this is going to change Blockland completely.
Lastly, nobody uses the maps anyway, it's mostly skylands and the slates. The game will truly define building now that we don't have maps. Although, maps never really interfered with building...