Speed and power aren't the issues for me. It's "tech", electro gimmickry, built-in obsolesence, down-to-a-price plasticiness and daft styling. Bikes aren't pieces of engineering anymore. They're consumer ephemera. Buy it, flaunt it, park up at a bike meet and talk about your tft dash/phone connectivity/cruise control/radar/auto this and auto that, and when it goes out of fashion trade it in and buy the latest thing.
A motorcycle for me should be an engine with a wheel at each end and somewhere to sit. I'd rather have an analogue 160 bhp bike with the barest minimum of electronics than a 200 bhp commputer that basically does the riding for me and is impossible to fix when it goes wrong.
It would be nice if motorcycles actually looked like motorcycles as well. That doesn't mean they have to be retro-styled (although there's nothing wrong with that when it's done well - think Triumph Bonnie range, Kwak Z 900 / W800, Guzzi V7's etc), just something an adult would buy rather than a stylised child's toy.
There are some good looking contempory styled bikes out there - the latest Guzzi Stelvio springs to mind, plus the X-Diavel and Desert X, the out-going Honda CB1000r (not the new Hornet) and Africa Twin. But there aren't many that do much for me.
Of course, emissions and safety regulations have a lot to answer for in killing off "proper" bikes. It's not all the fault of manufacturers.