15 might be okay. So there we agreed on this.

I know I beat you good with her but come on now! Metaknight was in a league of his own, that's hardly the case with Rosa. Also I'm sure the patch is going to be based on online play where she's not used that much, but I mostly expect this patch to fix things like the Wario grab release and the Zero Suit Samus infinite against Robin.

Not even using her right, I have one week using her almost two, I won the first match with her without even playing with her before,  the probles is that luma gets back too fast!!

I'm still running like crazy to catch Sheik.

I won my first battle as Pac-Man, is he OP too now?

You know what I mean Delphin :P, I have win several matches with her, I really don't know how to use her correctly. Luma gets back a way too fast, I have try to fight her with duck hunt and peach the results were just terrible.

Also this just sucks! There goes that epic battle where I trapped an opponent in Rosaluma's final smash and then me and my teammate just wailed on him! Got him up to 350% damage before he insta died to the star's explosion! Was especially funny how his teammate could do nothing but sit there watching his ally getting f'ed up!

The problem is that Rosalina isn't really that terrible without Luma.  She's obviously a lot worse, but she's still better than a good deal of characters.  She's way better than Sopo was in Brawl at least.  And stalling for 8 seconds in Brawl is not hard to do.  Grab them once, and you're good.

Aside from Rosalina, there is no character that I think really needs nerfing.  Zero Suit and Sheik are still really good, but not so good as to make things unfair.  I'm still not entirely sold on Lucario, Yoshi, and Greninja.  Wario needs his glitch fixed, and some more lag on the bike.

Some characters need buffs.  Mega Man and Palutena desperately need better KO options.  More start up or less lag on certain attacks.  DK needs either more power or less lag.  Charizard needs a quicker grab.

Yeah I do, hence my response! I'm definitely not denying that she's one of the best characters, but that's just the thing, there's always going to be best characters. Even if they nerf her, yal will just complain about the next best character, and then if they nerf that one, the next one after that! 

Nah.  There is a difference between characters like Yoshi, Sheik, Lucario, and Zero Suit who are just better than the other characters, and Rosalina who actually has broken options.  Can't hit her with projectiles, can't grab her, and depending on your spacing you either get grabbed or hit by Luma when you attack her.  Maybe with time people would figure out how to deal with it, but Rosa looks pretty broken.