Yeah that all makes sense, like I said it just doesn't quite FEEL all that interesting. I don't think there's anything wrong with it, I just think it could be better presented, but that's just me. Though you putting it like that, as saying humans are a little better at everything but not great at anything, does make sense. I like that reading of it.
I'm also glad you think my point on Half-Orcs have merit. It litereally didn't occur to me until I looked at the half-elf stats while writing my response and then checked the half-orc stats to compare. I suspect half-orcs are written the way they are because orcs aren't playable in the PHB. Without another main race to need to differentiate themelves from like elves and half-elves, half-orcs just got written up like the other races.
On the subject ofraces though, I really like how half orcs/elves, tieflings etc are handled in Pathfinder 2e. Rather than being their own seperate race (or ancestry as 2e calls them), half orcs and half elves are basically subraces of humans, (and a version of the variant human is another subrace, though PF2e calls them heritages). Which means they get the human ability score increase and then get a couple minor racial traits and the ability to choose feats from the - if they're a half-orc) orc feat list and the specific half-orc feat list, with the same going for elves. Meanwhile tieflings, aasimar, genasi, dhampir and other similar things aren't treated as seperate races either. They're heritages which can go wtih any other ancestry. So you can have an elven tiefling, a an orcish aasimar, a dwarven earth genasi, etc.
