I can see this happening. Do we know of MH themed faceplates for the New 3DS yet? If not they're likely to be announced during the N3DS talk methinks.
Not just faceplates, there's also menu themes for the 3DS (not just N3DS).
Spoiler galore, I'm not going to watch.
What spoilers? They're not going to show secret stuff 3 days before release.