Super Mario All-Stars 2 with HD remakes of Mario 64, Sunshine, Galaxy and Galaxy 2 needs to be a thing. Make that the 30th Anniversary's main event, and I'll happily shut up about Mario until the next console comes around. Really, though the Galaxy games don't need to be remade - just ported to HD with some minor cleanups.
Are you saying they shouldn't repackage a ROM of Super Mario All-Stars for SNES like they did with the 25th Anniversary release for the Wii? Literally no other work or optimizations done to the code, just a ROM? You're probably asking for too much... And they didn't even bother using the ROM for Super Mario All-Stars + Super Mario World.