Let me explain in points:
1. The goal of the project: Creating a series of campaigns for all parts of Heroes (except for the 1st, there might be maps for the 2nd), possibly with mods.

Campaigns are not my forte. Pure single-player, and even hot-seat, don't interest me (to be frank). I don't deny that campaigns are an important part of Heroes, but I am weak, inexperienced, and useless in discussing this topic. I am useless for a project with such a goal.

You can be a tester for the 4th part, or just offer ideas.:)

Many people want to implement their ideas. I feel awkward being an obstacle to others. I can't be a tester because I don't play single-player at all. Even for online tournament maps, I only practice in online friendly matches. It's impossible to practice a campaign in that mode.

I'm glad to see that there are people supporting the classic world of Heroes. I wish the author and participants of the project good luck.