Sounds interesting. I'll definitely be in for SSBU, at the very least.
I was considering making a team for Pokemon, but I found the linked ruleset a little disconcerting. Is it possible that those rules may be reevaluated before this current event, please? I'm mostly confused about the Galar Dex Pokemon only rule, since that's a pretty hefty limiting factor now that more Pokemon have been added to the games through expansions . If there's concern about Ultra Beasts, it doesn't seem right to me to also ban all the other non-Galar-Dex Pokemon as well. Also, my SO was considering joining as well, but his favorite Pokemon is Pyukumuku... is that considered too much of a "stall" Pokemon? If so I feel that it's unfair to further limit the number of available Pokemon by banning "stall" teams.
At any rate, regardless of Pokemon, I might give MK8 a shot alongside Smash.