I think buying trees and things of that nature just in general would be amazing.
Like 4-Lom said we have an insane amount of beds, Tables, Chairs, And so on. But so little to almost no ability to buy things like trees ( The only one i think you can get is christmas tree) and so on. If Classic was to release the ability to purchase even common trees, And other trees and rocks, Water tiles, And treestumps and everything else. I bet that would be an absolute game changer and something that would revolutionize and improve the experience of creating a house as well. We have all the material to make our house look nice, But we dont have that ability to make our houses truly unique in the enviroment, As we have so limited amount of house templates