Melee HD could easily still happen, or at the very least a Virtual Console port. It's not like the Analog L and R buttons are an end all for Melee like it would be for say Super Mario Sunshine. You NEED it in Sunshine. It's just preferable in Melee.
VC seems more likely as people would have more incentive to buy another controller, and potentially a controller adapter, if there are more games to play that require it than just Melee. They'll have to figure it out themselves but Melee certainly can be made available in some form. Not that it means it will but there's very simple solutions to the problem(s) y'all brought up.
Still wonder if VC is even going to come back for Switch or not. I'm starting to feel like it's a thing of the past at this point.
Analog shielding are necessary in Melee due to light shielding. It's an intentional mechanic in Melee and not something Nintendo would likely ignore. Moreover, analog triggers do play a role in competitive Melee as well, thus, without them, you're unlikely to get their attention which defeats the purpose of even remaking it at all. Plain and simple, if it's not a 1:1 clone of Melee but with better graphics and netplay, most Melee fans won't bother.
And again, given all the resources that would need to go into an HD remake + the chances that would inevitably take place and alienate the main target audience, there's little reason to even make one, and are better off just making a new entry. Plus, as N3ON pointed out, the Smash series is additive, so there's very little reason to go back outside of a nostalgia factor. Yes, the physics mechanics in Melee are objectively better, but well, that's another topic of discussion.
As far as VC releases go, I don't see the Gamecube getting a VC on Switch for numerous reasons. Controller and analogues aside, the biggest factor at play here is that Switch can't emulate the Gamecube, it's simply not powerful enough.
The Wii and WiiU ran GCN games natively since they used the same architecture. Wii was essentially two GCNs taped together (it was originally gonna be a mid gen add-on), and the WiiU is just a Wii on steroids, that's why WiiU has access to "Wii mode" and can even be hacked to read Gamecube games like the original Wii could. Switch on the other hand, can't do this. It runs on a completely different architecture based off an Nvidia mobile chipset, meaning it's got no way to natively run the GCN, and thus must emulate it (just like the NES, SNES, and N64 are emulated to run on VC). Emulation is far more taxing on a computer than natively running games, and one quick look at the specs required to run Dolphin on PC is all you need to know that the Switch doesn't have that kind of power.
In short, I'm very doubtful we'll see a VC for the Gamecube unless Nintendo creates a brand new highly optimized emulator for it, for the Switch. If that's even enough, considering you need at least an i5 for Dolphin, and the output of the X1 chipset that Switch runs on is far below that.
