Being a retro computer geek, everything that would involve the sound of 8 bit chipsets would be awesome and very welcome! But I don’t know if that’s your cup of coffee… 
It would be awesome if “someone” would convert the 8Mode SoftSNS machine, for example. Or rebuild it from scratch. It was a very awesome plugin…
Also, a C 64 SID emulator could be really interesting. There are a lot of VST plugins out there but no native plugins for VCV 1.x
Those are my 2 cents. Keeping my fingers crossed.