Biggest pros of primal so far are seeing new followers and, obviously, being able to chose relays.
Biggest con is losing the custom emojis for likes. It's fun to send a laughing emoji or a crying one or my typical yellow heart ๐ depending on situation. No, zaps don't replace that because it's money and value and bla bla bla. Receiving a laughing emoji after a joke is PRICELESS.