I too prefer the level based improvement over ASI improvement. I mean, I get the other side of the argument, but I prefer the TSR era way of doing things. Feels more like D&D to me I guess. I will admit I do like BA though, and the current way of keeping lower level monsters more relevant to higher level PCs, which TSR era most certainly did not. Not nearly as bad as 3e, granted, but I like a squad of orcs still being applicable as a challenge to a party of level 5 PCs.
But I do not like the fact that an experienced adventurer with many actual combat encounters under their belt isn't any better at combat than someone who never saw combat but is a bit stronger or more dexterous. IMO, experience and learning techniques is more impactful than brute strength with no experience.