One thing I find interesting about this these type of discussions when it comes to MK is that there is never any consensus one way or the other. There are some fans here that feel (and will feel) that he has evolved while others think (and will think) he hasn't and prefer earlier material. This is very different for others artists. It may not be the best example, but for say for Bruce Springsteen- the majority of his fans prefer his earlier work over his later albums such as "Working on a Dream" or "Magic" or his work with the "The Seeger Sessions" band.
Personally, I think MK has evolved over time but perhaps not to everyone's liking and not in the way that you would expect it. If you listen to "Shangri-La" and "Get Lucky" one after the other, it will become apparent that they are very different albums. As I've said before, I never cared much for "Kill to Get Crimson". For the first time ever, lyrically, I thought there were some "rough" songs on there like "The Fish and the Bird" or "In the Sky". At that time, I really started to wonder what direction MK was going in and began listening to other bands more and more that were writing music that I could relate to. But then "Get Lucky" came about, and IMO, it's one of his best.
Lastly, I just want to mention that it's become clear over time that MK enjoys recording and playing the music he wants to and being somewhat distant from the fans. Like it or not, when it comes to MK, that's all you're going to get. And don't dare mention that multi-platinum selling band named Dire Straits. It's just the 16,000 pound elephant in the room. Just check out how much publicity the new Alchemy DVD got...