WotC has posted a video discussing initial feedback on the One D&D Druid/Paladin playtest, along with survey results from the Expert playtest. Some highlights for discussion:
Druid: The developers recognize that the template version of wild shape is contentious. If they retain this approach, they would plan to add flexibility to those templates. If they revert to monster stat blocks, they might allow Druids to choose a limited number of options, with a default selection provided.
Paladin: The new version of smite is still intended to work with critical hits. If ranged smite persists, its damage may be adjusted through the internal balance/playtesting process.
Ranger: The updated Ranger scored very well in the playtest. Some players did miss the choice of options in the Hunter subclass.
Bard: All of the Lore Bard's features scored welll, but the overall subclass rating was mediocre. They attribute this to the loss of Additional Magical Secrets, which many saw as the key attraction of this subclass.
Rogue: The change to limit sneak attack to the Rogue's own turn scored poorly. The developers generally like moving actions to a player's own turn to keep the game moving quickly, but in this case, the change doesn't seem to be worth the loss of tactical flexibility.
Feats: With the exception of epic boons, all the feats in the Expert packet scored well. The developers are still loking at written feedback for fine tuning.
Conspicuously not mentioned were the Arcane/Divine/Primal spell lists, which were the focus of a lot of discussion during the Bard playtest.