More mass requires stiffer suspension if you actually off-road it. Corners become problematic, tire traction fights mass resisting directional inputs. The "Desert Sleds" went extinct after lightweight 250cc-400cc two-strokes showed up - 100 pounds lighter is an unbeatable advantage in the rough, a 30 HP 250 will push you close to 80 MPH on the flats. Very few sane riders exceed those speeds.
A heavy bike with long travel is plush but "wallowy", OK on the street but not so much on the trail. The reality is a nice street bike that can run over a dead racoon or helmet-sized chuck-hole and not toss you off, but remember to stay awake in the corners. A 650 Himalayan (Interlayan?) would sell well as a great "Adventure" bike IMHO. 6"-7" of travel on both ends handles the rough bits, that lovely 650 would push you and some luggage along just fine on the highway or at least halfway smooth dirt road. I'm pretty sure you could keep the all-up weight around 430 - 450 pounds if you skip the weird bodywork and foo-foo attachments. Double the power and maybe only 20-30 pounds over what you ride now.
There are 465cc - 475cc kits available for the 411, largely just bolt on, that pick up 6-10 HP. a 30 HP Himalayan would be spunky and a LOT more roadable. Freeway, hills & headwinds immediately get a lot less challenging. Most folks here that have tried them enjoy the extra Ongawa, and they are a lot cheaper than waiting & buying the new LC450 if & when it appears. A bird in the hand...