Once the sales start to lag because the "Next Great Thing" came out, I bet they will change their minds!
Your idea has been proven to be wrong time and time again. Every new mod that comes out is called a "Provari Killer". Each one has failed. From the VMax to the ZMax, Evic, Vamo, SVD, Segelei, and a host of others long forgotten. Everyone gets excited to get the "Next Great Thing" and then the problems are exposed. None of those have improved on the Provari. It still holds the standard to which all mods are held against. And it does this without bells & whistles or variable wattage. Adding more features to a mod that customers likely will never use, or that will not significantly improve their vaping experience is not a sound way to make a better PV.
People who purchase a Provari do not do so for the option of variable wattage, an OLED screen, a 3-button control, a puff counter, the ability to hook their device up to their computer to monitor their vaping habits, etc, etc. They purchase one because of dependability, consistancy, reliability, durability, and the piece of mind that should it break or fail it can be repaired for as long as they own it. Provape is not hurting with sales for the Provari. It's as popular today as it has ever been. It will always be popular even if it is not improved upon, which I have trouble deciding how it could be improved.
So go ahead and buy the cheaper Chinese mods with variable wattage and bells & whistles. Buy 3 or 4. See how long they last. See how much customer support you get. The "We make cheap. We sell cheap. It break, you buy another" approach of Chinese manufacturers doesn't fit in the way I make a decision in what I purchase with my hard-earned money. I prefer buying something with the qualities that I listed above, and nothing like that will ever come from China.