I think the one thing people need to get through their heads when it comes to speculation is one thing for now:
There isn't going to be a General Direct OR Mini Direct for the rest of the year. There can still be Game-Specific ones, or probably Pokemon ones, because Pokemon's Pokemon, but Generals and Minis are dead in the water for 2020.
Nintendo's shown their holiday lineup, and insiders have flat out said that "This is it" in regards to 1st party offerings. There's just nothing left for a General/Mini to cover, especially since now Partner Showcases cover all the 3rd party stuff, meaning that a General/Mini would primarily need to focus on Nintendo IPs....which there aren't any right now if credible insiders are to be believed. Monster Hunter's drop, whenever it is, is either going to be in a Partner showcase, or its own Game-specific Direct, and once that's done... well, what the ****'s even left aside from Crown Tundra and Smash? We already know the date that we're getting a Hyrule Warriors BotW info dump, so that's another notch in the General/Mini's casket.
Coupled with Bayo3 still in development hell, BotW2 obviously being a 2021 release(At the earliest), NMH3 being delayed, and Metroid Prime 4 in god knows what state, the earliest we're going to see a General/Mini is sometime in 2021, period.
If we're getting Smash.....eventually, there'll be a "Tune in on X date for a Mr.Sakurai Presents!" announcement, don't bank on waiting for a General/Mini that's not coming.
tl;dr:
Partner showcases have made it so that a Mini/General, if it were to exist, would need to primarily focus on 1st party titles... and if credible insiders are to be believed, we've seen our 1st party holiday lineup, meaning... there aren't anymore, and we probably won't see anymore until sometime in 2021. While Crown Tundra may be able to carry a Pokemon-Direct, because Pokemon's the special child that gets their own Directs, a single Smash DLC drop isn't enough to have a Direct for, if anything, it'd just be dropped ala Byleth, and no, their level of arbitrary stardom you apply to them doesn't matter. It doesn't matter if the character's as iconic as Master Chief or as unknown as Sukapon, the character will be revealed regardless this way.