Thunder is quickly becoming my favorite Lemmy app, absolutely great job so far.
A few suggestions/wishlist items for me:
Is it possible to make it so when you swipe to the right on the bottom bar, it can open the side menu? Right now, especially on large screen phones, having to click the top left corner is very difficult one handed.
I would also love to have an option to click to collapse the text in a main post (the one submitted by the original poster).
One more minor thing, the icon on Android looks pretty bad, at least on a Pixel. A Material You icon (that changes with the system theme) would be amazing, but I would be happy with an icon that used the circle system theme instead of a square icon inside a white circle. Material You theming for the entire app would be even better.
Overall this app is phenomenal, I'm super excited to see how it progresses. I'm also happy to buy a premium version/donate, so know there are people out here that will happily pay for you to continue development.