What is your opinion on the possibility of introducing a third tier of maps and a new faction into the game?

Thank you all for not forgetting about this topic. I'm already so disappointed with the fifth "Heroes" game and don't hope that Nival will fix the situation, so I'm not trying to bring the idea to completion. Maybe later...
Now, I'll answer again the most frequently asked question: "Why is the Castle underwater, and not on the water?" So: the Castle is underwater because I think it's time to introduce another level to the map (and what else could it be but an underwater one?). I find the current map sizes too small (even when they are increased). For me, the game is interesting when you can play it for a day or more, and not like it is now. Sometimes, when playing a "hot-seat" game with a friend in the third "Heroes," our confrontation would last for two days!! That's what I call a game. And how valuable was the victory in such a game!!!
I don't hope that an underwater level will be introduced in the fifth "Heroes," but if we ever fully develop this idea, then in the sixth or seventh "Heroes," we can hope for it... although that's not a certainty.
P.S. An above-water sea Castle is very thoroughly developed in the topic "Faction ABYSS and its inhabitants - the Tritons race." For us, the key idea is not the Castle, but the MAP LEVEL!