I'll be honest, I really cared less about how the idea of it being an edition change or not as much as I disagreed with the notion that it would be less confusing to not change. Apparently heels got dug on on the topic and everyone decided that it was suddenly a maximalist position of sorts (which I don't think I made it out to be).
But on the playtest, I think things have largely been okay. There have been things I disagree with (Ranger spells, Warlock direction), things I think need to be refined but are good (Druid), things that are just outright good (Cleric), and things that I think are just bad (Fighters and Weapon Masteries). I do think the overall conception of things like leveled feats are a big step forward for the design of the game and think that it will make it easier to add things to the game by gating more effective feats off at higher levels. If anything, the worst parts of the playtest have been the influence of events outside of the playtest, like the long delay we had early in the year for obvious reasons.