GPU/FPGA Mech has been my dream since like... forever. I started taking a crack at it here: https://gitlab.com/mech-lang/core/-/blob/gpu/src/bin/gpu.rs, but mostly I was just figuring out wgpu's capabilities in Rust. But that was months ago and I've since decided to push it off until after I launch what I have done already.
I have a private slack that I've been using to work with my students, I'd love to send you an invite. Send me an email at [email protected] and I'll send it to you. I've been putting off doing a discord channel because I wanted to code up a chat app in Mech instead :P I think I'm almost there but I've been thinking that for years >_<. If I don't have one by the time I launch in October I'll probably bite the bullet and do discord then.
A hybrid system is a really interesting idea. I actually wrote my bachelors thesis on a system heavily inspired by EVE to be used for knowledge representation in robotics and have been experimenting a lot with implementations of the idea over the years. You should really open a Mech discord channel, I'd love to hang around and help build something like that :D.