Haha! I too have wanted to do the same thing! Well.. not in React - I actually wanted to use leptos because it seems neat. So ideally I'd want an API client that'd work in rust in wasm. Or maybe it's simple enough to migrate an existing one over.

As this is very likely just a side project for me, I may as well share my desires for any new client. One thing I'd really like to see in a Lemmy UX is a swipe based navigation like in Sync for reddit. Such a lovely way to navigate.

Oh oh! and some decent customisation on different views (depending on communities and whims). Like big cards with previews and smaller ones with title emphasis.

Tbh all of this is basically what Sync had. Sync was great..

Not sure if making mobile apps these days is required as web apps can get you pretty much there with service workers etc. I guess hosting is still the main issue even though offline first apps can mitigate that a lot!

Thank you for reading my rambles. It's pretty much a mind dump rather than being directed at anyone etc :)