The only things that have substantially changed in the coach in the last few weeks was the new governor in the air pump and the new VW Passat TOAD and Blue Ox towbar.
Weights and things like that have been pretty consistent. The coach weighs about 25,000lbs with my stuff in it. Towing a TOAD adds no weight to the coach, other than the drag of the coach - no tongue weight.
As for Tongue weight, I have recently towed a trailer with over 1000lbs of tongue weight that would significantly unload the front axle, but I typically use weight distribution bars. No issues while towing.