Very interesting - I'd been watching your threads, thinking "If he can tow his trailer with the Jeep..." as I try to decide on a vehicle to replace my 2002 D2.
Do you know what MPG you're getting with and without the trailer? In the D2 I get about 11.5 around town, and 10 or so with the (Evolution 2) trailer, on highway but keeping the speed down. I guess my trailer is around 3000lbs with minimal load, and the D2 slows down going up hills but otherwise pulls the trailer admirably.
My other concern is maintenance - the D2 has needed a lot, but apparently the LR3 isn't quite as "hungry".