Viera didn't blow up as big as we all thought.

[BHolland]

Perhaps you missed it, but they actually made around 540 pieces of headgear available for viera and Hrothgar. This wasn't planned. The development team actually did it in their free time behind Yoshi P's back. From the sound of it, they only plan to add more as time goes on. Headgear isn't as lacking as people like to believe.

Source?
10char