FoundryVTT might be the best thing to ever happen to crunchy games.
So. I just picked up Harnmaster 3e, and I knew it was a really crunchy system that I knew I'd probably never be able to get my players into, but lo and behold there's a system on Foundry. The combat works great, there's so much detail, and there's modules out already for NPCs, and merchants....