Congrats on your new TV, may it serve you well.
I know what you mean. My 2005 Libby CRD is at 195,000 miles now, getting long in the tooth, and while I'm keeping it for the daily driver, we bought an upgrade for towing, too: a BMW X5 diesel. Going from 188 HP/335 ft-lbs (chipped) to 265 HP/425 ft-Lbs gives me a little more leeway. The Libby dragged the TT all over the US, coast to coast, and did fine over the Rockies, but it had a tendency to overheat if you didn't watch carefully. Not interested in a bigger trailer, though.
Wave hello next time you pass through Virginia.