the tank doesn't seem to be an issue with the Tsx, it suits the bikes intended use as a mild trail/road bike.
more secure and unless rusty, wont split like an old 80s plastic tank and leave you stranded or bbqued.
Suzuki were good at making bikes for the masses predominantly (sales focus) with an occasional reminder that they could make a good race bike. the TS was a good shot at a trail bike that looked like a race bike. its anything but a race bike. the suspension is soft (wallows around) the power is broad and easy but not that strong, the geometry is all trail bike, slow steering and the gear ratios are set for the road. i bought one years ago thinking it would be a great trail bike with road capabilities after racing a husky and i was sorely disappointed. i sold it before i busted it trying to keep up with mates on pe's kato's etc. Mine was a Boltons special with alloy muffler and bash plate, re-oiled and gassed shock, uprated fork springs and a few other details but the best feature was the bash plate which got a hiding as the suspension spent most of the time fully compressed. the bike wasnt able to handle the speed i rode at (it wasnt that fast) and the most annoying thing was sticks would always hit your shins instead of flicking under the pegs. i could never work out why. (apologies for the late reply, ive been away)