We, i.e. Crazy Panda LTD, would like to share our vision of shared XS modules, which we consider quite innovative in Perl world:
The proposed concept already has an implementation (XS::Install, XS::Framework), which we internally use on production more then one year. We plan to release on CPAN rather wide, deep and efficient hierarchy of our XS-modules, but it will take some time due to need of documentation, API stabilization etc.
Early adopters, questions, or any feed back are welcome!