You're not going to like this answer but several of your issues are related to trying to keep in the Microsoft ecosystem on a Google phone. While you may prefer MS apps and I'm not criticizing you for choosing that, there's just no way around the fact that Gmail, Google Now, Google Search are simply always going to be better integrated than other party software. You can still use the others of course, but if you're looking for deeper integration at the system level, it's just not going to happen.
#'s 12, and 13 I can only report that I don't have those issues.
#'s 12, and 13 I can only report that I don't have those issues.