For example, it's a tiny bit of a pain to quickly and cleanly access subscribed communities. There's a "subscribed communities" box beneath the right-hand sidebar for the instance you're in, but it seems to me like it should be a stickied item on the left-hand side of the screen, like this:
The devs are pretty hammered right now with the big influx of users. I wouldn't bother them with feature requests in the issues section at GitHub. Need a dedicated community for feature requests which we don't have, maybe !lemmy@lemmy.ml is the best place at this point. I have a few I'd like to put in myself.