Regarding the Hive Mind again - previously the rules allowed using battle magic on one's own units to reduce the ransom cost, I don't know why this rule was abolished.
Also regarding Red March - it is allowed only on HL+U - I suggest adding Jebus Cross/
Red March on Jebus Cross - haven't played Jebus Cross, and haven't watched it that much, army trades there happen on the 2nd week, if they trade down to zero, then Red can only win the game due to growth, and even if there were no army trades, Jebus Cross can be very rich in level 7 cache spots (7+ pieces + dwellings then how many) - I would be against it (I repeat, haven't played it)
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Also regarding heroes specializing in Offense/Defense/Logistics - if this can be programmatically limited so that the bonus from the specialty increases up to a maximum of level 20, and then remains unchanged (at level 20 - the specialty increases the skill bonus by 2 times, i.e. expert Offense skills will give - 60%, Defense - 30%, Logistics at maximum speed - 1200 MP instead of 600)
The Grail can be dug starting from week 2, day 1, now after 5 weeks - i.e. from week 2, day 2, turn 1
And also preferably in the rules section - add rules for HotA, as there are clarifications there for VT. Or in the HotA section - publish the rules.
The Grail - that's unknown, suggested that you need to visit some % (or a certain number) of all obelisks and then dig, but somehow the Grail was neglected
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You're going off on a tangent, some values, and it doesn't matter what those units are, what matters is how much of your army remains on average after breaking the blockade - if it's less than half at a rough estimate, then it's a blockade, if the opponent disagrees, then there's a judge, write to him immediately