What he said.
And having players make bricks is a hassle. You gotta have the bricks in order to connect to the server and it's just an overall pain. I'd rather wait for more bricks to come in an official update.
These also need to stop looking like identical copies from the lego sets. Remake and add/take away a few things and give them a more blocko view.
Also, in the other thread you said you might convince Badspot to add these to V11, that won't happen unless you make sure that these are legally distinct from the lego bricks, or he would get into trouble.