Wooly, this is an awesome project have you shared it on other sites like DJtechtools.com?
Personally I would love to own a Bozak CMA-10-2DL and this looks like a great project. Have you done any testing to see how your mixer measures (THD, FR, RIAA tracking, etc.)? I'd be curious to see how it performs, especially vs the original. I'd also love to hear if you have done comparisons with standard high end phono and preamp setups. I feel like that is a comparison that many DJs should do but never do.
Personally, One of the things I have dreamt of for years is a DJ mixer like this one but using modern circuits from this site. I envision a Pass ono, pearl 2 or possibly RJM phono circuit feeding a B1 for each channel.
The other thing I have always wanted is a modern tubed mixer using aikido style topology (although traditional circuits wouldn't be bad either). However considering how accurate and noise free I've found SS phono preamps I would still possibly want that part of the mixer to not be tubed.
Have you ever had any interest in similar projects?