That is an excellent idea!
I am a graphic designer who just moved to Ubuntu Touch and I'm loving it so far. I've been wondering how I could help the community in some ways as I am not a developer and know nothing about coding.
If you're idea does come to life in a way or another, I'd be glad to give some of my time to review and tweak some visuals.
However, I think there's a balance to find so that everyone is happy. I think it is important for developers to respect the Canonical guidelines, after all it is because of the them that the design is so beautiful. On the other hand, we want things to go forward and make the process easy and simple for everyone. I'd be afraid the some developers get frustrated with your proposition.