As I said, if you want to replace one of your Avatar Abilities with a Warrior Feat or something similar, go for it. But not passively adding more feats as you level up.

Just a quick reminder, but you get your first Avatar Feat (As in Feature of your class, either Warrior, Rogue, Healer, or Mage) at level three and gain one ever level afterwards until max (So that's 3, 4, 5, 6, 7, 8, and 9).

You gain Avatar Abilities, that is special abilities unique to your Avatar at level 1, 2, 3, 5, 7, and 9. Granted, these abilities can be similar to feats, but otherwise are unique to your own avatar in whatever thematically appropriate way. 

That's a total of 13 different types of bonuses or skills you can use at max level, though right now you'll only start at level 3 or lower. Thus you have 3 abilities unique to your avatar, plus one out of the three class feature you if you start at level 3. Obviously if you're only level 1 all you have is your avatar ability.