Quote - I'm sure they'd let me, but this was six weeks of work, time for something a bit more profit-oriented :)

Well, you've established a precedent with them.  That's a "good" thing!  Now, should you feel the need, you will probably be able to do similar projects inspired by their license.  So, long as this goes well and they're happy with whatever exposure/attention it gets, you'll have an easy time on the next project.

Grats again!

PS - I am not aware of the developer/publisher or the community.  How has the community received this?  Any "Official" public statements from any community reps commenting on this project?  I'd be interested to see how they've handled it if they've done anything "public" with it.