First, great idea!
Second, not sure it should be a badge...
Seems that there are several "achivements" that aren't quiet badges and should be in a different category such as,
for short (opens more levels to a blue solve)
awe-inspiring solves for this, but the piece count to get one is too great.(for it to just be a badge)
could be a badge, but currently not considered...(it's got my vote!!)
:Goal piece never touches ground, if it starts there once it leaves(and it must without sliding sideways) can't touch again.
Possibly more; will look.
Also will start ignorantly using them like they are well accepted!