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Regarding the timer, there are two main points to consider (perhaps as a farewell):
1) (FIRST AND MOST IMPORTANTLY) reducing the game time is, in itself, a misguided goal.
In esports, standards for game time have already been established – it should be between 15 and 45 minutes, with relatively rare exceptions in either direction (Warcraft, Starcraft, DotA, LoL, CS, Heroes of the Storm, Overwatch, Hearthstone...).
For Heroes, this goal is fundamentally unattainable; no matter how much you reduce it, it won't work. Therefore, I suggest we acknowledge this idea once and for all: Heroes 3 will never be as visually appealing or dynamic as the main esports games, and it shouldn't be. The nature of the game is different, and players can still enjoy the leisurely pace, the ATMOSPHERE of the streams, and interacting with the streamer (our most popular streamers – Tvaryna, Hell, Amilu, Toga – are examples of this; it's an atmospheric game). Blitz timers actually work AGAINST popularizing the game; you're just sitting and playing, and there's no time to look up, pay attention to the chat, or anything.
(This is not to mention that technically, the only way to prevent maphacking might be to completely rewrite the game, which means esports is not an option for us at the moment.)
2) (Following from point one) the timer should be reduced only as far as it still allows for a game without sacrificing quality (or it should be done with a special disclaimer that it's a special kind of perversion, and we understand that – like Blitz Jebus, which is explicitly labeled as BLITZ).
As for mirror matches, all the experiments have already been done a long time ago; I'm referring to Lucky's recent streams, where he played mirror matches almost non-stop and performed at a high level. Therefore, his opinion on this matter was very important to me. Now that he has spoken, I am emboldened to write this text.
With simultaneous turns in HotA, 16-8-1 can no longer be considered a normal timer; it's RAPID/FAST MIRROR MATCHES, call it what you will, but it should immediately be labeled as a timer perversion. A loss of game quality is inevitable, even for top players, and for ordinary players, there's no chance; they will either simplify their strategies or get frustrated (and at the same time, the quality of the stream will inevitably suffer for streamers)