Yeah - I know how dusty it gets. I didn't bother to dust mine for awhile, forgot to do it today, and was embarrassed when the delivery guys were taking it out and took their hands off the top to wipe them off LOL.
A single shelf won't work because this thing is deep, and I'd never be able to reach it, but that built in might work because it wouldn't necessarily have to match the cabinets. Just enough room for my Tardis