I think a new edition is a great place to revamp ability score scaling. We've always had a problem with MAD vs SAD builds, and Starfinder went in a good direction by making it easier to raise low stats. However, what if we replaced the standard 10 +/- 2 bonus scaling, and used the P1E score's point-buy as the ability score itself? You would just use a table to get your bonus.
Ex; you might have a sheet that looks like this:
score == modifier
Str 17 = +4
Dex 02 = +1
Con 05 = +2
Int -1 = -1
Wis 02 = +1
Cha -4 = -2
This is the P2E equivalent of 18 12, 14, 9, 12, 7 for a total point-buy of 21. Then races could give you +X to stats, but it would be of equivalent benefit to you, regardless of how much you care about that stat. You could also grant a +1 ability point every level to let players get a smoother growth curve.
I belive they wanted to do something similar for SF but did not find a way to make it clean. I really hope Paizo considers a system like this for P2E
TBH, if they change ability scores at all the only thing that would make sense is getting rid of the scores entirely and just using the bonuses. So you wouldn't actually have a Strength of 17-18, you'll just have a Strength of +4. I doubt they'll do it, but I'd be totally down for it.
I agree with fuzzy there, that is the only thing that makes sense and what Mutants and masterminds 3e did. I don't see them doing this, but I would welcome it.