you cant assign two damage and trample the rest over, because two wouldnt satisfy needing to assign lethal damage before calculating Trample damage
The last point is particularly important for the one Background creature in the set, The Faceless One
Neriv, Crackling Vanguard points in a very different direction, scaling up with the number of differently named tokens you control, kind of like Gimbal, Goblin Prodigy
Gush has been restricted and unrestricted back and forth more times than most, but it has also enjoyed no shortage of success in even the lowest powered formats
A Mana Crypt in an otherwise durdly deck doesnt automatically slide it to the other end of the scale
Theres great mana fixing to make decks better, and there are powerful cards that can be played in multiple formats