What are your top three features you'd like to see on your favorite Lemmy client?
For me it would be:
Monet icon and Material UI design.
Mark read post while scrolling.
A button to hide such read posts.
I know there are more critical functions which most of the apps are lacking like going straight to the comment from a reply, it wasn't a big deal before because there were not many comments, but now it is becoming harder to find the context!
So far only Jerboa and Thunder qualifies the first "needs" for me!
Great battery life + interplay with android ecosystem
Information density
Customizability without being overwhelming
Works well with larger Lemmy, Threadiverse, & Fediverse communities
Upstream major improvements up to base Lemmy + ActivityPub platforms. Ideally there'd be some cooperation between open source apps to reuse existing tools and extract shared functionality to new libraries for further reuse, especially in terms of Lemmy API consumption, security, android/ios/etc platform quirks, emojis, etc.
Multiple accounts / platform access
Allow workflows to share between platforms. Kbin combining micro+forums is neat, but I think separating microblogging and link aggregation/forums makes more sense. It'd be neat to share things that I like find as microblogging posts. Vice versa sometimes I think masto posts would be great discussion items for communities and woudl like to create a post from there.
Open source
I know RIF wasn't, but ideally there'd at least be an open core (which fits in with my first point under #2)
Cooperates with other open platforms, preferably using web + other free standards where appropriate to make contributions easier.
If fully open, eventually backed/incorporated by larger FOSS players like Mozilla Foundation, Apache, or FSF.
I only briefly tried other apps. RIF was older (and hardened, so super performant + stable), and kept the information density high (less whitespace) similar to old.reddit. Lots of internal integrations with other sites so my reddit browsing didn't affect my feeds on other sites (particularly YouTube).
https://www.androidpolice.com/best-reddit-apps/ has a good comparison of the main apps.