I'll toss in my support for the Druid class. I know 4e doesn't get a lot of love around these parts and that's fine, but I think that the 4e druid was pretty well executed, especially with regards to Wild Shape. Sure there were some exploits with feats and equipment that could get a little ridiculous, but things were (generally) balanced, (imo) compelling, and far from the state of things in 3.5. Thing is... it kinda took the AEDU system to make it happen. I've just never been in love with pre-4e rules around Wild Shape and inheriting animal attacks and the 4e toolkit made things fun (for me).
Summoning can also definitely be tedious, and I wouldn't be upset to see the extent of summoning be reasonably curtailed for all classes.
If 5e Druids can cast spells like 2e and melee like 4e, or at least do so the way I want them to when I play, while doing whatever others want them to elsewhere, I'd be pretty satisfied with that.