Both

And Platinum Games

*Currently imagining a 3D Megaman platformer....* 

Yes and yes.

For real though, I can easily seeing them buy Platinum Games.

Neither, I want both to remain third party ...

If Nintendo were to get their hands on either of them it would just devalue the two entities ...

I'd rather they have neither but if I had to choose they can have Capcom.

I still want my Persona.

Oh god no. Neither. They're in no position to aquire any big dev right now. People are begging for Metroid and Animal Crossing on top of F-Zero and a billion other IPs Nintendo hides in the closet that isn't Mario, Pokemon, or Zelda and are getting nothing. Perhaps if Nintendo changes next gen my opinion will change, but as it stands they don't need any more IPs that they'll just sit on

Capcom. Atlus are going to continue making games like they always have, no doubt, But Capcom is a shell of its former self, forever wandering the deserts to find some sort of redemption.

I'll allow them Zynga and Zunga.

Capcom for Mega Man.

I can't see them buying either, that's for sure.

If they were given the choice though, Capcom.