For that matter, there's so much diversity in actual rendering anymore, very few apps on any platform are really native feeling. Especially with a few electron apps in the mix.

Would be cool to get some standardization on at least a few APIs for default fonts, light/dark mode, background and accent colors, etc... so that apps are a little less alien in practice. I'm really not even the idea of Tauri or similar to use a native browser engine, but better skinning APIs so you can get something like Material, but tuned to better match the desktop you're on.

For that matter, a wasi component package would be nice as well. Harder for accessibility though.