For Uno specifically: I do like the attempt to build out a WASM target, it looks usable. Uno looks to be in a lot better state internally than even two years ago, which is promising - that's one thing I can't get out of either WPF or Avalonia.

Key things that need to improve: - Documentation appears to have gotten better in the last few years, but still many sparse or underdocumented corners. This is my biggest reservation today. - When I last used it (a few years ago), a lot of things weren't fully implemented - maybe this has changed? But it added a lot of friction.