I could be interested-----but 50,000 min. drive line lasting, better wind management, no adjust valves, solid mount engine, better weight balance (less rear bias), solid engine mount would reduce unsprung weight of rear eng/drive train but not having engine go up and down on each bump-----should inprove handling-------but remember 500 cc TMAX (had one) was total sales flop in US market....and.....TMAX with 30-40,000 miles could be expensive to own. Had SilverWing 600, too, cheaper to own than TMAX-----Burgman 400, mine, 25,000 miles, warranty just ran out---I see no expensive problems other than another belt and probably worn front pulley and rollers.
Bye bye soon or at 40,000 miles.
BUT 2013 @ near $7900 in US---a upgraded twin might be even more!! Weak dollar.
I use scooter or motorcycle as transport/fun/allround but to most in US they are toy...