I've had a lot of fun with it since phase 1! The level cap issuance (25, 40, 50, 60) has been interesting, letting you explore more of the overworld at each stage. They've added a bunch of XP boosts to help new people out.
Phase 4 (lvl 60 cap) drops on 7/11 if you're curious. I raid lead on Alliance - Wild Growth (North America) as a paladin nerd 🤓