I like the changes made to the races.
I have always thought that humans needed something else. The +2 bonus is great; however, I would like to see a proficiency bonus of some sort also.
I think that half-orcs should have a bonus to con instead of wisdom.
The changes work with old adventures and 3.x material because the pc’s would now have only a slight advantage over npc’s and villains, but they are heroes and should be a little above average in my opinion.