I haven't uploaded anything in a good while to Mod Archive, since I use ModPlug Tracker as well, and I've gotten so nit-picky about my use of (excessive
) effects, filters and such, that it's gotten to the point that only ModPlug Tracker plays them correctly. So I can see the situation you find yourself in. (Though I don't use VSTs)
What I'm probably going to do is use Mod Archive as an 'open source' repository for my music and direct people to my MP3 recordings of my tunes (which, I have also yet to upload somewhere). Anyway, what I'm saying is you could do the same. It's not the best solution, I know, but you did ask for 'alternate solutions,' so that's my input.