If you want to help us making the upstream packages better, please subscribe to the mailinglist and let us coordinate the effort! The mailinglist is the central place for our activities.
The idea is not only to discuss ideas how to solve cross-compiling issues with upstream, but also to utilize patch-tags as we know them from kernel-development. That means, patches can be cc-ed to the list using Signed-off-by:, and other parties can add their Acked-by:-tags. Our hope is that this will convince upstream maintainers of the relevance of our patches.