I also think this is (again) a case where FT8 will help everyone. No, really. Here's why.
Those that just want an ATNO and aren't fussy about mode, are almost certain to find FT8 very friendly and maybe available to them on multiple bands at the same time for many hours a day. These stations will probably crank out rates of 150 to 200 Qs an hour on each band in the early going.
Which means if you can't abide FT8 yourself, a lot of your erstwhile competition is going to be content to work the "wrong" mode and leave less competition for you. What do you care what they do? They're gonna do it anyway. Why not profit from it?.
I have also observed that operations that put up huge numbers of Qs on FT8 in the early days see less jamming activity. If that trend continues, that will help everyone out as well. Less abuse of your ears and mine.
Moreover, this is going to be a large operation with plenty of ops, so it won't be one of those "two guys who work all FT8 and a little of the rest" kind of deals. This is going to be more like Baker and all the other large scale operations. I'm not worried about that and neither should anyone else, whatever the preferences. Even if CW and SSB are "merely" 30 per cent (and I think they will sum up to be more like 60), that's going to be an enormous number of QSOs available, pretty much around the clock, too. Whatever the number is, it is quite likely there will be enough "action" for those that want it with stations that have worked on these expeditions in the past.
I have exactly one Q with Bouvet in my life, so I need two modes and lots of bands. I expect to get all of that. Some of it, probably, the first day and, yeah, probably on FT8. After that? Well, I got some conventional QSOs to run after. I will get at least one band that way and probably more.