Our household has both and I've ridden both on and off. In my opinion, it is not worth the upgrade if cost-benefit is to be taken into consideration.
The difference is about 4k from a used pre 2017 to a new 2019. If I had 4k+, I would do an akra 4-1 system, traxxion fork and rear, Ivan's tune. That's about 3k total, you still have 1k left. You can do the slipper clutch mod, projector led, aftermarket windscreen and seat.
For the styling though, the new Gen looks amazing depending on the color. The rider aides is nice to have but it is not something to lose sleep over IMHO. Of course, it all depends on which one do you really value.