Biggest complaint seemed to be about mirror comps. We don't like mirror comps in this community ourselves but from the comments I saw it seemed like casual viewers absolutely hate mirror comps and wanna see teams playing a lot of variety and different comps.

The only way you can remove mirror comps is that you take away the ability to swap ingame, and before each map, you introduce a pick phase, no bans because the game doesn't have enough heroes for that, but you make it so when a hero is picked by one team the other team can't pick that same hero, it would create more diverse comps but the trade-offs would have to be removing hero swapping mid-game to do so, I wouldn't mind them trying it out personally I think the idea is interesting to play with.