Keith Baker’s blog is pretty good, and I’ve really enjoyed his supplements for 5e on DMsGuild

I’m not thrilled about the lore change, honestly. They had a cool origin story within Eberron lore that’s just… gone now. They’re more portable to other settings, I guess, but the existing lore wasn’t exactly stopping people.

Warforged are constructs!

At least increasing the damage dice to d8s

Any number of tiny and/or prone creatures can share a space, so piling your party into the only safe place in the middle of an AOE is a legitimate strategy.

Yes, guards and wards works. Circle casting doesn’t impact a spell’s ability to become permanent

PF1 also has the massive advantage that the rules text is freely available to use and redistribute, and also Paizo still prints the books!