My initial thoughts are largely that 80 AP isn't enough... we have access to what? 3 trees? Great!
However, when I was playing around with Stalwart I ended up having spent 70 points in Stalwart alone, leaving little room for anything else... 70points in one tree without picking everything up?!? ... feels like a bad design for a mix-n-match system.
Given that we've got access to three trees? It feels like we should be able to do more than max out one tree -- for some of the trees there is so much good stuff, and yes I realize tough choices are intended... guess I just don't get the mix and match feel that this system is supposed to provide.
TL;DR, if we have 3 trees and 80 AP, each tree should be limited to a max number of points... meaning there shouldn't be more than say, 50 pts worth of stuff in each tree.