I'm going to share some controversial thoughts, and some might virtually throw stones at me for it =). Players who are unsure of their skills (consciously or subconsciously) tend to favor time limits because they try to level the playing field. They hope that a stronger player will get flustered and make mistakes due to the time pressure, failing to do everything they intended (and failing to come up with strategies that those who prefer shorter time limits are afraid they won't think of). So, I'm more than sure that these limitations will NOT achieve ANYTHING GOOD. They can (and do) only lead to a degradation in the quality of the game (and this degradation is much less noticeable in stronger players, so these "limit enthusiasts" don't achieve anything with it). Instead, the limits should be increased (unlimited is ideal), which would benefit everyone. If you think about it, you can always consider how to play better on your turn and on your opponent's turn, and that's how skills actually improve. But the shorter the limit, the closer it gets to StarCraft, Counter-Strike (and Tetris :D) – I have nothing against games where quick reflexes are more important than strategy, but Heroes is definitely not that kind of game, in my opinion. And I'm not even talking about the convenience and comfort of playing with unlimited time... IMHO