Hypothetically, If Banjo Kazooie Were A DLC Character in SSBU/3DS...

[kinisking]

Soundwave said:

Nintendo and MS should just strike a deal.

Nintendo agrees to port its iOS/Android titles to Windows Phone (DeNA can do it).

Nintendo gets Banjo-Kazooie, GoldenEye, Perfect Dark, Killer Instinct, Conker, etc. on Virtual Console. MS also gets rights to then put GoldenEye on their XBLA service.

Minecraft for both home and portable NX platforms.

Halo Online, Banjo-Kazooie, and other Rare IP for portable NX only. MS doesn't have a dedicated portable, so it's not direct competition, any more than Halo on PC is competition for the XBox. MS has made products for Nintendo portables in the past ... Banjo-Pilot, Viva Pinata, Halo DS was even demoed at one point. 

So you want ms to give them everything. And only get golden eye in return