They basically did similar stuff with some of the stuff in the sm3d collection thingy.
They did not.
For Super Mario 64, they emulated it. They increased the resolution the game renders at (trivial with emulation of 3D systems) and they used basic LUA patches in the emulator to override HUD textures with higher resolution ones adjusted for the Switch controller.
They did not add any further enhancements in any way. Compared to even 64 DS, it was extremely sophomoric. Compared to the Super Mario 64 decomp project, and what its native switch port is capable of (more on that later), it's an incredibly lazy port. They didn't even fix the slowdown with Bowser's Sub that is as simple as adjusting a single compiler flag when you build the ROM from the N64 game source code.
For Sunshine, it's an admittedly impressive solution of mostly emulation with some sections of the game engine ported (I think it's the audio processing?). Once again, the game is rendered at a higher resolution, but they did not redo ot improve further any textures (besides some of the HUD again), graphical effects, or game content. Wind Waker HD this ain't.
For Galaxy they cannibalized the existing port of it to Android on the NVidia Shield. The Switch shares most of the important internals with it (CPU, GPU). It's a combo of emulation with certain key code ported, like Sunshine. Again, besides resolution and HUD, no improvements.
Beyond that, Nintendo has been content to sell straight up emulation through the Virtual Console service since the Wii. They've had multiple instances of straight ports over the years, and some of the most popular Switch games are straight ports with DLC bundled in.
There are numerous impressive remakes they have done over the years, but that is absolutely not the norm.
The Super Mario 64 decomp on the Switch supports (not available in Nintendo's official port in 3D All Stars):
- Effectively infinite render distance for objects (coins, enemies, stars, etc)
- 60 fps (compared to the original/all stars 30fps at best)
- True analog camera control using the right stick (All Stars is just the original's clunky button based control mapped to the stick)
- All sorts of QoL options like collecting stars not kicking you out of a level, options for streamlined/faster message boxes
- Optional bugfixes
- Optional cheats
- Variety of HD texture packs to choose from
- Variety of higher quality 3D model packs to choose from
- Support for an astounding variety of mods. Levels, entire new games, new characters, new movement and control options (Odyssey Mario in 64 with full cappy and enemy capture mechanics anyone?)
- Support for many more languages
- Nearly all of the above is toggleable mid-game from the pause menu.
I don't think anyone was expecting something amazing out of 3D All Stars, but they absolutely fucking phoned it in.
Lol. Minecraft alone proves you wrong. 4chan is where Notch first posted early builds and got feedback.
No argument on it being a cesspool. It is, and has been, for a long long time. But plenty of good stuff happens there too.
/vr/ has unearthed a large amount of formerly lost media (guides, promotional material, entire games! Most of Osamu Sato's work outside of LSD Dream Emulator had effectively been lost before they got onto it) and is often the spot that leaked stuff drops, like the huge Nintendo leaks a few years ago. The Doom threads there have had a hand in some big, well known mods. It's arguable that Sonic Robo Blast 2 Kart grew out of those threads' failed Doom Kart project.
/g/s "friendly windows thread" is decidedly unfriendly, but the guides and links in the OP are wonderful resources on how to set up and configure new Windows installs. I haven't seen the info there laid out as well and as easily digestible anywhere else.
/vg/ has a large number of threads that are really the only source for certain info about certain game series. The emulation general threads are great resources, and the wiki built from them is the best go to one stop shop for info on emulators. The amateur game dev general threads have been the building grounds for a decent amount of games you've heard of before. Risk of Rain is a good example. Hopoo started his game dev journey in those threads. Any game that references "AGDG" is shouting those threads out.
Point is, there's diamonds in the shit pile.