Opening myself up to be totally wrong about this. The redirect syntax is a bit tricky at the moment. Would it be possible to simplify it a bit? We should probably wait on bug 771701 before doing much here. Our decision on that will affect our approach to this.
Is this still an issue? The syntax is actually pretty simple: https://developer.mozilla.org/en-US/docs/Project:Getting_started_with_Kuma#Redirects
Nope. Let's leave this alone.