You can always go for a good 'ole gasoline one that can scare the beejeezus out of you...like an H2R, or that new RSV4 special edition that Aprilia's coming out with that's supposed to put down like 230+ hp!
Whaaaat?! That new Thruxton is awesome! Well it looks awesome...I'm sure it's not a particularly great bike but still. That's something I would have as a 6th or 7th bike
Cafe racers are cool, but they're more for show these days.
168 ft-lbs of torque! Holy shit!! But 495 lbs?
Big motors with nitrous, or turbos, etc...... if I was after that I'd just get a Hyabusa/ZX14/whatever and go to a drag strip.
I really think there will come a time when other propulsion systems will be at least as good as internal combustion engines. If the new system is nearly as good, and is either smaller, lighter, more efficient -- or just flat out sexy -- I'd like to twist it's tail and see what it's all about.
Whatever that is, it will be desirable to me, if it has no excess fat and geegaws. The Wankle that Norton used for a few years.... the transverse inline motors from the BMW K bikes, and old Indian Scouts.... Whatever it is, if I can look at it and imagine how it does what it does, that will be interesting to me. The form will follow the function.
If it's cool to look at for those reasons, and it also has enough oomph to keep my interest, that's a good thing.
A Goldwing has not and will not interest me. The only variation of that which caught my interest was the one with the alternate front suspension, and they loaded it up with so much junk it wasn't appealing. Fat, too much chrome for no reason, too low, bad ergos.... HP would have helped, but not enough.