I'll try to be a motivator too: after a series of streams of the Remix for Heroes 6, I bought it again and completed all the campaigns of the complete edition on the maximum difficulty. But the official scenarios didn't impress me, to put it mildly, and I haven't seen any fan-made scenarios, only maps. Out of boredom, I got the complete club set and almost all the achievements (except for two related to the Void - I got tired of killing it a thousand times, trying to meet the conditions). So, I guess there's not much left to do with the game :( That's why "Dungeons of the Mind" will be very interesting!
The editor for the sixth game is hellish, but today I fixed a lot of errors and finished the last side quest. There's really not much left.