Firstly: humans don't resist change when it's something that they asked for, they resist things being imposed upon them against their will. There is an incredib

Firstly: humans don't resist change when it's something that they asked for, they resist things being imposed upon them against their will. There is an incredibly persistent cultural movement in product design that "we know best", this is a very parent-child style relationship: "Mother knows best", that both disempowers and disengages customers. Yes, yes, yes! A thousand times Yes! Here's the right way to do a UI revamp: Introduce your powerful, better, shiny new UI as a clone of the old UI. Once the clone is of high fidelity, then introduce the ability to switch to new "skins" or new "modes" which have the new powerful features, or the better UX. Perhaps even set up a scenario with 2 or more competing to win new users. The proper way is to let users discover and move to the new thing. Imposing new UI/UX on users just degrades goodwill, and it also hides data about where the new version has flaws or needs improvement. Adopting change needs to be a "pull" and not a "push."