I look at Magic cards through a designers eyes
Iconic cards are described as "extremely rare" with only two appearing in each set
DOCTOR WHO: GREEN A lot of the green cards in the decks are kinda replacement level, because green is good at basically everything
I'd swap them for more grindy advantage cards that want to go to the yard like Unlucky Witness, Bloodghast, Nether Traitor, Filth, supplemented with things like Grim Harvest, Skullclamp, Contamination, Chthonian Nightmare, Deadly Dispute
Dramatic Reversals enchanting sibling, Unstoppable Plan features Jace & friends assembled to twiddle with your mana rocks and value engines
While necessary, this announcement marks a major turning point in the ever-evolving history of Disney Lorcana