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Realizing that such attempts at "improvement"—like reducing Shakti's power or cutting (removing) cons—have been, are, and will always be present, I will still try to convey my opinion on this matter...
I think all these attempts are due to the fact that "rationalizers" are shifting their attitude towards Heroes into a purely competitive aspect. If that's the case, it's much better not to rework the game, but to start mastering the Tournament Edition (TE)—everything has already been discussed and tested by players there, significant progress has been made (like with Vik). In Heroes of Might and Magic (SoD), there are many more random elements than in TE (probably, I haven't used TE). Randomness is a feature of SoD. It's its essence. That's what makes it enjoyable. I actually preferred Bridge more than Chess (even though I played for a year and had a first-level rating in a local club around the age of 16). If you like, SoD and TE are slightly different philosophies, different approaches to the game. For me, TE is a pursuit of a cyber-discipline, a kind of chess—while SoD has more of a card game element... SoD has more of it, in short.)))
As for annihilating the portal—why be petty? Let's just ban Inferno, for example—well, the starting position for it is relatively difficult, and few people play it. Or here's another idea—I suggest swapping the knight and bishop in chess if Iron Mizer comes along—rest, to hell with it...
Am I exaggerating? Yes, but not to argue—but to convey my opinion more vividly...