In short, I wrote that Deleb is stronger than Erin and weaker than Deidra. I'm not very sure about Erin; it all depends on the deck, but I was sure that in the Deleb-Deidra pair, the Necropolis hero was stronger... But it turns out that in the final of the "hunt for Karl" tournament, Dexter lost to All-Seeing Deleb, using Deidra. Maybe in 3.1, Storm had such a big impact on the balance, or maybe I misunderstood something.
In general, without Dexter on the Heroes of Might and Magic Online server, it's quite boring and lonely; only Diabolik remains.
I should note that many foreigners have improved a lot: Lord_Michael, yatahasy, mandi, and others; I don't understand where they get their skills from.