Wicc
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Vic, don't you think it would be easier to implement this concept using fixed maps? Unlike random maps, you can guarantee a spectacular experience (at least, that's what I think). There are many options to limit the duration of the game, and a short timer fits well into the gameplay of fixed maps, as the map is studied in advance. And HotA could probably bring many interesting things to mapmaking.
Although individual fixed maps can certainly be added to diversify the selection for individual tournaments. For example, there's a trend of porting the Pirates of the Caribbean map into HotA.