I know of an advanced team working a lot on kernel improvements for ARM-based devices. That's Free Electrons, and they are in France. Looking at their blog http://free-electrons.com/blog/ I suppose they may be interested in tinkering with Pyra prototype and submitting some patches, or at last following Pyra kernel development and reviewing patches and discussions.
I have once had email conversation with Michael Opdenacker (CTO), he appeared very kind and open-minded. But I wonder if they can afford such charity now.
What I am proposing is to contact them and figure out how interested they are.