Iced seems really promising, however, it's a passion project by a single developer. They very clearly stated that their goal is to follow their passions and desires first, everyone else second, and that it will always be a single person project. Their readme even discourages contributions.

Companies using it in production are often forking it as a result, and trying to keep their fork in sync. Ultimately, if the community wants iced to become a major and stable framework, it will have to be forked and a community development model built around it.

And I'm not saying this to disparage the author in any way, their readme even seems to suggest that that's exactly what they'd prefer.