Weak TC batteries are easily remedied with jumper cables off your truck. If you don't run isolation between your truck and camper battery, that is user problem unrelated to the generator.
I agree that setting the generator to the far rear is the worst weight distribution location, but it is the best space efficiency location if integrated into a TC. My Arctic Fox has the generator, dual batteries and dual 30 lb LPG all behind the rear axle, yet the CG is still ahead of the axle on a short bed truck. TC manufacturers have figured out how to work with these limitations.
