Stuff that would benefit both Nintendo and Square? And part of that is stuff assumed to be coming if at all.
You know that Square wants a big share from a big pie.
Going off of polls on Smash related topics? Not exactly sure that's your best bet for what the general gaming masses may want.
I mean, Smash talk generally attracts the Smash core fanbase. And yeah, not claiming they should ignore that, but nothing really is objective regarding the official ballot until we hear from Nintendo themselves, so at best, either side has a well educated guess or assumption.
It's literally how things are set that make him more viable though compared to Geno though. Say what you will about supposedly not being asked for as much, but by that logic if he was asked for more in the ballot, why did Cloud, a character with supposedly no business being on a Nintendo crossover at the time, beat him to getting in?
And now, think about it, unless Nintendo themselves have something to tap into, what gurantee do they have that just because people have asked for Geno that his fanbase would financially outlast the green that Final Fantasy VII has been famous for raking in, regardles of what platform of medium it's shown up on?
More in short term doesn't always fit v the business long term sight. Just food for thought.
It ain't a matter of him simply having more games than Geno either, but how even now, people know him and talk a good game up about him. And who's to say people wouldn't grow interested in him? Even Nintendo fans will have keen access to his home game on the Switch if they want to know about him first hand, so there's that.
Past history has shown that Final Fantasy (especially VII) fans will flock in for it.
Not saying Sephiroth is guaranteed, but you can't deny that it would be a good gameplan based off of stuff actually confirmed to be present or in the making.