A tutorial along the lines of yours & rhadoks for MM would be phenomenal
MM isn't as hard/complex as some people make it out to be, the biggest problem is that a lot of the "easy choices" from vanilla are actually pretty complex and not at all simple to play as. A lot of people seem to recommend Portugal as a starter nation which I strongly disagree with, you want to totally avoid the colonial and naval side of the game until you understand the basics (trade, NI management, Admin. efficiency, province improvements).
Once you know how to get your economy humming along nicely then you can start doing more interesting stuff :3
For me, the biggest annoyance is the massive performance hit (it's about 2-3x slower on my machine). It slows the pace of the game down far too much for my liking. I have a limited amount of time to play, watching days crawl by isn't my idea of fun.
MM isn't as hard/complex as some people make it out to be, the biggest problem is that a lot of the "easy choices" from vanilla are actually pretty complex and not at all simple to play as. A lot of people seem to recommend Portugal as a starter nation which I strongly disagree with, you want to totally avoid the colonial and naval side of the game until you understand the basics