Henk Rogers mentions (in http://www.nintendoworldreport.com/specialArt.cfm?artid=11267) visions of compatibility between different tetrises, and a "tetris olympics" in which all players should be able to comfortable compete against each other. He also mentions how they continuously how they add small features here and there, such as awarding t-spins with extra points etc. When faced with questions like "doesn't that ruin the original idea?", or "many people dislikes that feature" he reasons like "well, it's optional, those who doesn't like it doesn't have to use it". Well if there are 10 different ways of being "good" at tetris, there will never be a fair tetris olympics. I say, stick with traditional tetris, add only features thats fair and doesn't split tetris players into a group that's knows how to take advantage of the feature and those who thinks it's a stupid feature not worth practicing. Whats your take on this?