Well, I think it's a good thing they are reissuing pre-bop and post-mid 1960s jazz. Generally, those eras have been more or less neglected in comparison with 1950s-mid 1960s jazz. Apart from Mosaic only Nessa and a few other labels have reissued post-mid 1960s jazz, and Mosaic have done pre-bop sets before, of course.
Thanks for the mention and I agree with your other observations. If Mosaic issues anything you might find interesting, buy it if you have the means. This era is ending and the future is not better.
I find your "fringes of early Jazz and 70s (Braxton, Threadgill)?" to be stupid and insulting. YMMV.