I'm surprised I haven't seen any mention of 13th Age. Is that because it's too similar to D&D for people to consider it, or is it just not that popular? I've personally been wanting to try it out with my group as a possible replacement for 5e because I like a lot of the differences. I think the feats and the One Unique Thing make it easier to make PCs more customizable.
As far as combat goes, the Escalation Die and damage on missing an attack roll seem like nifty innovations to keep combat from bogging down. Plus, distance is abstracted (engaged, nearby, far away) so it isn't dependent on maps and minis.
Also, from a GM perspective, I like the monster stat blocks a whole lot more as they look much easier to run. Magic using NPCs don't require you to flip back and forth between their entry in the bestiary and the spells section.