I will be happy to explore various paradigms and compiler approaches. I doubt I will be of much use with the low-level design; rather I will be trying to absorb/learn as much as possible. My interests would be in the Forth approach we discussed last year and anything related to Haskell. I may also be interested in assisting with low-level BIOS/drivers, but I have less experience and will need a mentor for that.
Fair disclosure: I would consider the Mill to be a part-time project due to job/family/time considerations.