Although we've got no evidence, I do see smash ultimate as a kind of culmination for the stand alone entries of the franchise. The name, the concept (every fighter every stage), and the general approach make it feel like a kind of full stop.
GaaS is a logical next step.
I think this model could really work for smash and kart and splatoon. Assuming this happens next gen and not with switch we could get:
- base games included f2p with the console
- fuller games offered for a lower than usual price
- In each case characters/stages/challenges etc continually added for nominal fees keeping the game alive/feeling fresh/thriving ongoing
It was never a model I thought I would support, but rocket league and fortnite have made me a believer. Both games feel like the could be Nintendo games and work great as GaaS and I think long term that's better than buying an iteratively updated game every 12 months which I think if I were to do with smatooriokart I will ultimately get sick of