I too am looking forward to an external TB HD Enclosure.
I *hate* USB 2.x and I tolerate FW 800. I move some pretty big files around (TIFF Images and VMs that range in size from 1/2 Gig to 100 Gig) and I am tired of waiting around for stuff to copy.
While FW800 is a bit pokey in 2011, I don't know how anybody puts up with USB 2.x for large file copying. USB3 is nice but it has some bandwidth issues that I hope TB does not suffer from.
I would love to see TB become more of a standard than FW but I'm not holding my breath. A great more vendors need to support TB or its going to be the faster-but-outcasted standard that FW ended up being.
It's also a shame that Apple never supported eSata since it would have been trivial to add all these years.
I have money in hand so hurry up TB developers!
My wish device is an external HD with TB (obviously) but also USB (minimal), eSate (nice), and FW800 (great). This would allow me to bounce the thing from a number of different machines (old and new, PC and Mac) without finding a go-between-device to handle it all...
-P