If something works, then it works. I'm old enough to remember when you couldn't give away a Japanese parallel twin. 20 years ago you couldn't give away a 2 stroke street bike of any displacement or cylinder configuration.
I get a lot of parts when they go "out of fashion". My Savage barhopper has a cast off flat track tank and a cast off FLH one piece rear fender. My 100% made of cast offs street track/TT hybrid CL72 (250) has a cast off chassis and engine, cast off CB77 (305) twin leading shoe drum rear wheel, cast off T500 Suzuki Titan front wheel with twin leading shoe brakes, cast off Ceriani rear shocks and fork, cast off exercise machine seat that fits the chassis like it was custom designed for it, cast off CB 72/77 low pipes and CB77 carb set... couldn't give me the donor bikes as 100% stockers, but the mish mash of parts works well as a whole. Only things I've changed on it are the seat, bars and front wheel, the rest was done in the late 60s or early 70s to make it more competitive on the local tracks.
When the sheeple move on to another hobby, you'll have a ready assortment of bikes and parts to pick from. Let them do the legwork, what's cool today is tomorrow's cast offs. Doesn't change whether or not it looks good, just out of tune with the "fashionistas". Shop I worked at out west had hundreds of aftermarket Sporty and coffin tanks from 1970-74, couldn't give them away. I put one on a KZ440 and one on a 450 Rebel and all of a sudden we couldn't unpack them fast enough... they'd become "cool" again.
Bike trends are on a roughly 25-30 year circuit, we're in the mid stage of Japanese twins being popular. Give it a few years.