I really do appreciate Your hard work on learning all details of this wonderful game and sharing them with us. You have teached me a lot. I rarely comment, because I have very little to add. You (and some others) are somewhat so effective, that its scares me.
Just a hint: when strategic games reach to that level, where You are now, its hard for many people to follow it. I personally lost motivation to Heroes 3 at some point for that reason: I loved playing against humans, but they had brought the game to such level, that You needed to squeeze everything (and more) out of lemon. I would not call the result as a lemonade

Eventually I knew exactly when enemy arrives and how many units he has abroad - that was very easy to quess - maximum possible for that date.
I respect You games a lot, but the real reason why I havent joined HoF, is that I can not find attractive to micro every city every turn and play only top starting locations, while picking enemies and trying to avoid any mistakes. If I dont do that... I have no chance, because You all play ridiculously effectively.
Also, I think element of luck is very important in games. If t was up to me, I would organize HoF so, that all players start from same strating game, which would make HoF much more objective and challanging. Maybe I would not make only the best date as a criteria, but combination of date, score and maybe techs. Also, players could get some rating points for HoF games, that dont go only for winner, but runner-ups as well. Rating should be normalized somehow by number of games played.
As HoF is challange against human, I personally dont find attractive to run against finish date only. I know, many average players think similarly.