The card pool has ballooned out, punctuated by the printing of two excessively powerful Modern Horizons sets
While not as flashy as the above two cards, Encase in Ice is special because blue has very few effective removal options
The extra test cards are usually worth including
The Switch: When and Why CMC Changed to Mana Value Magic used converted mana cost for a long time, so why was it changed with the release of Strixhaven
So while I dont necessarily have an indication of which matchups are truly good, bad, or close, I believe I have a pretty good understanding of what needs to happen in order for you to win in most matchups, and how to sideboard to help accordingly
This gives you a lot of tools to build around while still being on theme