Starting with the good, aside from two cards were going to get into later on, Kaldheim is a pretty well-balanced set
Currently, one alt-art Pikachu promo card can only be collected by subscribing to the Premium Pass
Call of the Ring + Ripples of Undeath Call of the Ring and Ripples of Undeath don't let you pay life en masse for a combo turn, but they're excellent to consistently trigger payoffs like Font of Agonies and Betor, Ancestor's Voice
Second, the player who goes first may not play a Supporter until their next turn
Theres also the issue that most set mechanics are implemented with some kind of setup/payoff dynamic, where your best outcomes revolve around mini-combos of specific cards
Graded Population Report: Pikachu #4 Visualize the distrbution of grades in the chart