dear lord i hope not. im totally against putting in characters for the reason of "just because" or because its a "classic character" i only want to see new faces that will offer something new as far as gameplay goes.
Oh no you didn't read what I said in that big post. I explained a bit why I would think Birdo would be good but I can reiterate.
Birdo would have a very unique playing style. Since she could shoot eggs out of her snout. She could also derive some attacks from Yoshi. Her ginormous bow could be manipulated as some sort of boomerang projectile type thing. Birdo would be a like a stronger more well balanced Yoshi. Also her character is quirky as one of the only Female villains and NO I AM NOT STARTING THE MORE FEMALES BATTLE. Birdo also could have some of the items from games she has come from like the sports games. Plus she has been a noteworthy character in the Mario series. Especially from the earlier era of the games. I think it would not count as a new Mario character but as a new Yoshi character since the two are always combined even though they have never been in a game together at all.
So I hope I explained I did not mean "just because" or because its a "classic characte" :3