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Of the two, the Madrigal deck feels a bit more complete because it is largely made up of Madrigals with a few other cards sprinkled in, while the Frozen deck is a bit of Frozen, a bit of Tangled, a bit of Hercules, with some Mulan, and Raya, and Mickey Mouse thrown in the pot
As Interceptor returns to the battlefield because of its triggered ability, you choose which player, planeswalker, or battle it's attacking
Dredge is on hand to bring back any crucial lands, and it opens up plenty of interactions that keep The Necrobloom's tokens-and-landfall schtick feeling interesting
Unstoppable Plan and Gogo, for example, can create infinite nonland untaps on your End Phase, provided youre untapping at least two mana in the process
That said, the Commander Bracket system is probably better than the informal power level rankings , or leaving it up to players to say whether their deck is "competitive" or not without any solid criteria