I will say that the only problem I see with using Talents instead of Feats (from my perspective as an author) is that it's two letters longer. That might not be much at the moment, but when you're talking about a huge book where it's going to be referenced dozens or hundreds of times, that could add up to quite a bit of space.
I could definitely understand the decision to call them feats if they're being called feats because of rules/abilities that specifically interact with feats, specifically, as opposed to other abilities/rules/etc. or for some rules-related reason related to how feats work that makes it more useful/convenient for class abilities to be rolled into feats. It might also be interesting to see how--if at all--class feats are balanced against general feats--or vice-versa.