So instead of having a block 1x1, block 2x2, block 3x5 or whatever, you just have a 'cube' object and can make it large and flat, or tall and thin, or big and wide. Then you either have plain-ish or nicely repeating patterns on the objects (preferably a choice).

Repeat the idea for other objects like bridges (use just one long piece rather than repeated pieces), cones, hexagons... whatever.

You want a big flat floor? No need to drop down your grid then start placing blocks - just lock a cube in place and scale it in the X and Y axises. No more having to use another piece just to fill in a little gap in your wall - you just scale the wall a little bigger.

That would blow my mind.