If any gurus are reading, I'm not sure that I'm a fan of Michael's setup. It adds even more of an element of chance into the game, if you get a bad setup then it's almost impossible to recover. I'm ok with Bruno's variant, because you can factor that into your gameplay, but if you get 4 low tiles to begin with and the order they've drawn means you have a 1 in the bottom right corner, that takes several moves to get back.