I see tons of people saying that a reboot is a direction the series could go in, and many of them saying that it very likely will happen if production of new Smash games continue after Ultimate's release.
Sometime ago I stopped and actually thought about this: what exactly does "reboot" mean, here? What are some of you actually envisioning for a reboot of Smash? What does that mean to you?
Smash is just a fighter game that only occasionally gives a you a clear story. Heck, aside from the fact that we don't know if Ultimate has a story mode of it's own or not, Brawl is the only game that had any kind of actual story going on. The rest of it primarily amounts to "Nintendo and other video game characters come to life from trophies or toys and beat the crap out of each other across each other's worlds as part of a fighting competition or just for pure fun". There's not much to "reboot" in that regard.
As it is now, I personally don't see why some kind of "reboot" is necessary. It'll probably be many years from now if Ultimate is a serious hit, which I think it will be, but even so, they could just as easily give us a new a game with different and new content much later down the road, just like they have with every previous entry in the series. We always get new content, some content gets changed, and we lose some past content as well. Unless you want to change Smash's whole gimmick or it's iconic gameplay entirely, for whatever reason, what is a reboot actually going to do to it? What do you have in mind for it? How will it be any different from just making another follow-up to the last game? Even if something about it is very different (Say, maybe a much more minimalistic roster) is there any reason to refer to it as a "reboot" instead of just referring to it as another new entry in the series?
I don't know, maybe some of you can change my mind. I just don't see what they'd have to gain from "rebooting" Smash, nor do I know what folks are actually thinking a reboot of Smash will be like.