Level to everything (except maybe initiative) should have been implemented in DnD long ago. It's tiring to still see the game pretending that my character who can beat T-Rexes and 10-feet tall giants with skin of stone in hand-to-hand combat, effortlessly even, is still forced into the "action movie hero" definition of realism outside of combat; and if you have some stats fall behind by design, that makes items to boost them mandatory and creates the genre-inappropriate Christmas Tree syndrome without fail.

The problem with PF2 skill implementation are as follows:
(1) Generally underpowered and still too much number-crunching for too little payoff.
(2) Some skill uses that probably should be trained-only aren't.
(3) You have to ultraspecialize in a skill to get decent results reliably. That will still not make you outclass someone who totally disregarded the skill to the point where the latter cannot compete.