Jeff;
I like your thinking. A few months back Tom Doak posted a similar question asking for feedback on interesting tee designs, so it's clear to me that you fellows are looking to stretch the envelope on what is commonly accepted as a relatively boring architectural feature.
One unique tee that comes to mind is the 1st at Castle Harbour (RIP), which was a grassed area virtually one story in the air on the resort patio.
But, I think the best ones are those that somehow incorporate a natural or permanent manmade feature into the design. The 1st at Merion was mentioned, and I've seen others that are situated on a natural bench in a clearing, or just something that is basically flat, but with subtle contours that continue out into the surrounding area.
Conversely, the worst tee area I've ever seen is something at Pete Dye's Mystic Rock in PA on hole 16. In an attempt at making it a par 72 course, and providing the stereotypical Dye 5-3-4 finish, the tee area for 16 was located in a steep hollow. The sad fact is, that a tee 130 yards up the hill further would have made for a lovely par four. However, because it apparently made no sense to have a tee box in a pit, the tee was built up roughly 35 feet in the air, requiring a steep climb of steps to get to.
It is nicknamed the Volcano. For some reason, I thought Dung Heap was a more appropriate title.