In the meantime, I have some delectable crossover matter for you to nosh on. I stumbled across these items while I was... OK, I'll admit it, I was searching for a DuckTales/My Little Pony: Friendship is Magic crossover fanfic. I did find one, but... let's just say that I would prefer to pass over it in silence. I'm sure that the writer did his or her best, but there's just not that much substance to the thing.
Graphical blandishers have been busier:
IDW's MLP MICRO-SERIES COMIC #8, the one featuring Celestia. Unfortunately, these kids were making fun of the aging and increasingly oblivious teacher Inkwell. I'd almost have preferred that they were playing hooky or something. Also... "A-WOOOOOO"? Is that the DuckTales theme song or a Warren Zevon hit from the 70s?
If you're not satisfied with ponified versions of HD&L, how about the real McCoys... and an entirely new distaff challenge. And the lads thought they had issues with Webby and Gosalyn...
A Dog and Pony Show" clearly indicated that certain areas of Equestria are chock-full of gems, this would be a natural thing to do. Due to the completely alien territory, it would also be natural that Scrooge would seek assistance from a local expert, whose many talents include an ability to find gems with her magic:
As for Launchpad, provided that he could fit his trusty 'copter through the gate, or portal, or continuity rift, or whatever would allow communion between the Ducks and the ponies, I'm sure that he'd get into the spirit of Equestria and make friends quite easily.
Promos have begun to appear on Discovery Kids (nee The Hub) promising the return of new MLP:FIM episodes in Spring 2015. I had to chuckle a bit at the teaser below, because it partakes so transparently of "movie trailer-style overkill." Where is the late Dan LaFontaine when you need him? "IN A WORLD where Twilight Sparkle discovers the magic of friendship..."