These walk you through a mostly scripted game, complete with cute little word bubbles from Avatar characters discussing it on some of the pages
We felt the enemy colored colleges were an important part of what made Strixhaven special and decided to commit to that direction, with other assorted nods to the open omenpaths like the guest professors in the commander decks
Mental Misstep was banned in the initial Modern banned announcement, based mostly on how it played in Legacy, where it essentially pushed one-mana plays out of the format and made most decks 56 cards, since everyone had to run Mental Misstep, not so much because they wanted Mental Misstep in their deck but because they needed to be able to counter their opponent's Mental Missteps
Distribution and quality of overall cards (ramp, interaction, draw): The deck has about 10 ramp cards divided among artifacts and creatures, though most creatures only colorfix for green, even though mana pips seem quite evenly distributed in the deck
Occasionally the Arena programmers will adjust these digital cards to power them down if they end up being too strong, or powering them up if they dont play as well as the designers hoped