I really Lemmy and Kbin. Both provide solid desktop experiences and app development is only accelerating.
One thing in particular I am having a hard time with is discovering communities. I know there are a couple websites dedicated to this but discovery on both Lemmy and Kbin is not very easy. This becomes compounded by the fact that some communities have fractured across numerous communities or magazines. Referencing different communities/magazines is also was more annoying than doing /r/dancing or whatever.