Nice review man, as a third year MTG digital player ive got to say,the mp is BRUTAL for anyone that's newish to the game, the last few years were easy once you got the decks down and knew what they had in them but this year its a mystery,you really need to bring it in mp matches.
The tutorial is WAY better this year,explaining the rules in phases.
The deck building is going to be either a nightmare or a godsend for you depending on if you have a good grasp of how the cards/colors mix and are used together, I have found like two out of five of my current custom builds are great.
I did want to say the whole 5$ per plains card set is garbage,I unlocked each plain in like 2-3 hours (including a few encounters for each) so I really don't see the urgent need to get them all asap,a few days of grinding encounters on each plain will fill each non premium set (each story duel only gives one booster so you need to keep grinding encounters from each plain until you unlock them all)
Overall a great game,I hope to god they bring back 2HG next year though.