Yeah, everything taken into consideration, I feel it's pretty obvious that the pre-COVID plans were for E3 June presentation to have announced Min Min and FP7. Consider Sakurai always has done multiple fighter reveals at E3, even for the first pass, and respects it enough to show up in person/hold tournaments. Honestly, Min-Min's info was released in such a weird and awkward way that I would probably guess E3 was canceled if I JUST had the information about her release.
That means specific date theories kinda go out the window, as this info SHOULD have dropped the second week of June. Also consider all the stuff in this rumored direct is probably going to be stuff that was well prepared for that date and has been just sitting (or getting a quick second bit of polish with the added time).
What's pretty clear is that when E3 got canceled, seemingly every single video game company had the same conversation, said oh god whew we don't have to rush, then broke up their info and scheduled a lot of it for 4-6 weeks later. Maybe E3 should have always been 3rd week of July, heh.
The only question in my mind is if they'll really do the double Golden Sun mega drop. I feel pretty confident they'll announce GS Switch in the next direct, but would they really do the Smash reveal too? Obviously, we're all hoping, but it could be FP8 or FP9 and in a later direct. Also, would Nintendo release GS Switch in 2020? Bravely Default 2 is coming out and although it is 3rd party, Nintendo has been very chummy with Square and probably wouldn't want to challenge the JRPG space.
I think it probably depends on where Camelot is at and what the scope of GS Switch is. But if they were trying to get some type of gameplay/cinematic trailer ready for June 9th, I can see it happening sooner rather than later.