I'd switch to FSRS, but the short-term workload increase is too much for me. I know it can be avpided by only enabling FARS for new decks and then gradually shifting over the entire collection, but that I don't think I'd like my collection fragmented over multiple spacing algorithms.

For now, Anki's v3 algorithm is good enough for me. The only thing I didn't like about v2 was the lack of buzz factor which meant that a lot of closely related flashcards showed up in the same reviewing session, making review of such cards slightly ineffective.