The issue with this new style of examination is that the speed of changes is so high, that there's much less learning possibilities than before these role based exams. In the past you could acquire several books on the subject, or do a online training course, and also follow the free edx courses. But nowadays the changes in the exam objectives are so often that you don't see any books on the market anymore, because when a book will be written and released for a new exam, the contents has already changed. Or the exam is retired. Also, online video courses, such as cbt nuggets, have a hard time following the speed. And the free edx courses are taken offline. Now they are superseded by the MS learning modules, but they don't cover everything you need to know. Also, I heard from a few MCTers that they struggle with the speed and sometimes complete illogical choices made by Microsoft.
So it's almost impossible to study well for an exam nowadays. The only thing you can do is through the (sometimes not so clear) MS docs pages and hope you have read enough for the exam. Or wait for an expensive course, hoping that course will be released before the exam is retired again.
So, no, I'm not happy with this new role based thing you created, especially the enormous speed in bringing out updated version of the exams, or retiring exams all together. And I believe I'm not the only one who believes this to be a step back in quality learning. So I hope you listen to your community and slow down the speed. Because I'm getting less and less excited with learning for a new topic.