Now have it working such that with one Apache/mod_wsgi instance, you can partition up things so that for any groups of processes, embedded, or daemon process groups, you can selectively say whether they run with free threading, or the GIL. Further, for those processes running with the GIL, you can opt specific sub interpreters into using their own GIL. So full flexibility to dice and slice it how you want. Still open question as to how to best make use of it, but you will have the option.