I personally believe this will happen for a myriad of reasons.
The first one is quite obvious.Nintendo released last year the NES mini with 30 games, and this year it will release the SNES mini with 21 games.Nintendo simply wont waste all the research and effort that went into making this improved VC used in the classic editions to be contained within only them.It will reuse the same "engine" for them in the Switch VC.
Now, you already have 30 NES games and 21 SNES games that are compatible with this new VC.I dont know the reason why the Wii U VC launched the way it did, but I personally believe that Nintendo is streamlining the VC and making the effort to port the old games to it easier.Assuming my line of thought is correct, you already have 51 excellent games there from the start.And I hardly believe that Nintendo has not been hard at work(or at least, the Nintendo Europe division that works in the VC)porting other games to it as we speak, be them less popular or not.
And there is also the reason that this would be quite the headline and a great luring point for people that bought the classic editions but not a Switch yet.Imagine if Nintendo came and said "VC will be available this x day, and there will be more than 150 games from day one, all the ones that you loved from the classic editions and more, and every week more being added!".These same costumers that bought the minis would be thirsty to play the other games that didnt make the cut, but that they loved as a child.In another words, nostalgia marketing at its best.
There could also be games from other generations such as N64 and Gamecube or even other consoles(The Wii U had some from the Turbo Graphx and Switch already has Neo Geo games there), which I do believe its comming and will be there to some extent, but at the very least, I believe that NES and SNES games will be greatly represented(I know I have said in the past that I believed that the VC would have all of the Wii U and 3DS VC included in the Switch VC from the start, but I think I may have a bit too ambitious at that).And I mean, they have to, if Nintendo wants to get that subscription going the way that they have promised.
So, what do you guys think?
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1