Is there any word on a return of HCO?

I'd wager the word is "no".

I'd supplement that bet and put money on the fact that even if WK ever attempts a video game adaptation again, it will bear no resemblance to the product that Icarus Studios/MFV tried to call a game. Like their namesake, I think they flew too close to the sun.

The money that the community invested in the game is the worst part. It ended up being a very expensive "free to play" platform. It might have remained viable if there was some sort of AI to play against when there weren't enough players around, but the interface was awkward and not friendly to newcomers.

I think they could make it work. A PC/Console game of Heroclix.

Like they do with set/boosters you could charge for the base game and release characters for a small fee.

I'd buy it in a heartbeat, but I think 99% of the player base for this game has spent a small fortune collecting and most of them have sold off their collections.