I to don't understand why so many people want to dump the zuke for something new just to have "new". I could see it if the zuke was struggling to compete with the other brands, but when you have the most reliable and most powerful engine on the market why not hang on to it as long as you can. At least until it starts becoming obsolete to the competition, which hasn't happened yet. However we all know the zuke is disappearing soon, but at least we have yamaha involved so there is definitely hope that cat don't go backwards in the engine department
Eventually cat will have to dump the zuke, thanks to the EPA clown show. But it's arguably the best two stroke 800 in production. Some of the reason Doo and poo don't make more power is because they are meeting emissions and when cat comes out with a new engine I doubt it will have more power for the same reason. You can only put so much fuel in a 800 and meet emissions without some boost.