I am confused. There is only one Z in the game, so the only way to get ZZZ would be to use both blanks, which would get you a lousy 10 base points. Given a blank should normally give you an out, you would be 100-150 points worse off if you played ZZZ instead of a word already in the dictionary.

So I hardly see what the issue is. Okay, so Q is a little bit easier to dump - but you could dump it pretty easily with qat anyway.