I like them, just need t get some bugs fixed. I hate the way you put the upper part of the block, you should be able to tranform him in a full block by clicking in any part of the lower part of the block, not only the top part.
Also i like how water and lava don't go over them, its a cool effect wen building something in the surface of it and i can see in the future making challegings rooms in survival with lava right at your foot.
I like them enough I just paid for the game. New blocks make Keiyas happy!
I've also been WAAAAYYY overusing the red brick block... but we've been imitating TV-Brooklyn and building pizza shops, so it's expected.