I think people thinking that a character getting into promote something is actually kind of backwards. I think it’s actually the other way. I think Nintendo adds characters to entice developers to release their games on their console. It’s an easy way to convince a developer to put their game on a Nintendo console and help promote that console by saying “Hey, look, you’re game is already really popular with Smash fans. You could easily make money.”
I feel like it fits because after Snake we got Metal Gear Solid 3D Snake Eater, after Sonic we got well a lot, after Mega Man we got the Legacy Collections and 11, after Pac-man we got a new Namco museum and Championship Edition 2, after Ryu we got Ultra Street Fighter II, after Cloud we got FFVII on Switch, after Bayonetta we got more Bayonetta and the announcement of 3 (this one is different I know she’s basically Nintendo at this point), after Simon we got Castlevania Anniversary Collection, after Joker we’re getting P5S, after Hero we got DQ 1, 2, 3, and 11, and after Terry we got Samurai Shodown and I think KoFXV. The ONLY outlier right now is Banjo and I’m not putting it out of the realm of possibility that we get Rare Replay sometime soon.
Edit: I guess I should also say that this is really just my idea of how things work out. I know they vary but I think it’s a very possible outcome. A Smash character to entice developers to release games on Switch seems like a win win easily.