I've been following the project for a little while now and have been considering how I might be able to help out.
I don't currently have any ARM boards (yet, thinking about getting an ODroid N2+), but I might be able to help source things like hosting, mirrors, build hosts, etc.
I'm also a pretty experienced package maintainer so will be looking at how to cross-compile for ARM and see if I can help out that way (including e.g. port and test my AUR packages).
If there's anything specific which the project would benefit from then please let me know.