Hey Drac -
From a construction standpoint, it would seem that the gently narrowing tiles would be the easiest to make. (I was thinking of cutting a a couple of 50cm straights in half and narrowing it and making a new 30cm key on the flat "cut" side.) Why do think this would be VERY LIMITED as you put it above. I, obviously, don't want to start slicing up foam if I'm missing something here.
Thanks.
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