Flair is nice. They remind me of old school "signatures" on forums. Awards can also be nice, but I would prefer those more like accolades in CSGO; marking posts as helpful or funny or whatever with a little icon. Not random, arbitrary things you pay money for.
Most of the things Lemmy doesn't have that Reddit does are the things only added to monetize. They could be repurposed for a more practical use on Lemmy and that would be great.