As a Steam user, I'd love to have FH on Steam, but yeah, not likely to happen. Steam's community probably wouldn't take kindly to an unfinished furry game. Plus, with the way Feralheart is working now (registration not being open 24/7, login tab) it just wouldn't work with Steam. With how many people don't check the forum now to learn about updates and rules and the login tab and everything, there'd be plenty more that wouldn't and would likely just take to the Steam reviews/discussions to rant. I'm not familiar with Game Jolt, so I can't speak on that.
Thanks for at least putting the idea out there though, but in FH's current state, it just doesn't seem possible.