Players keep asking for more DINOSAURS, not eagles and such. You want to add new excitement to the game, keep it simple and introduce these apex predators. Only the biggest, nastiest, most awesome genus of carinovores rivalled only by the tyranosaurids.
Listen, at the end of the day I play this game daily because I love everything about dinosaurs. So give us a new creature that will excite us. Haast eagle? Meh