The whole point of Trisquel is to be a 100% libre Debian.
Running it in WSL defeats the point. Though I would find it amusing if ReactOS implemented a WSL (or would it be an RSL in this case?) Having a libre NT isn't a bad idea, I suppose you could in theory run 100% libre code on ReactOS. If there were FOSS x4500 drivers for windows server 2003, it could work, but it's not mature in it's development enough for production use.