Being that such a tiny percentage of the earth's population is 6'6" and up, it seems like there would be a lot more good athletes if there was a height limit and a lot less lumbering giants who are really unathletic
There's been talk of a 6-ft and under league. As far as those giants as you call them .. try being that height while attempting to remain athletic. I know some are unathletic (thinking back to past non-greats like Shawn Bradley and Manute Bol) but most hold their own.