Since you asked for ideas....
Ever since Digital Railroad crashed, I've been looking for a front-end-no-fancy-no-hype solution for online licensing.
I've looked, experienced, and paid for them all (the usual suspects), but I have found none of them to be very suitable, not coming close to the simplicity and down-to earth offering of DRR.
I have touched on this before in the alamy forum (even before DRR crashed). A contributor front end (a simple, fixed design would be fine), perhaps similar to the alamy site, except with option for own logo/name linked back into the alamy database