Mark Rosewater has written several times about the power of learning from mistakes
But Id start looking more closely at the decklists and calculating whether buying singles is cheaper than buying the whole deck as prices start to creep up
ThisDuskmourn: House of HorrorEndless Punishment Commander Deck includes 1 deck of 100 Magic cards (98 nonfoil cards and 2 Traditional Foil Borderless Legendary cards), 10 Archenemy cards, a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil alt-border card of rarity Rare or higher and 1 Traditional Foil Uncommon card), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card
This is an advantage for some decks
While white doesn't have the easiest time getting to threshold, I've heard that playing Armageddon plus good weenie creatures can be a viable strategy
Destined Rivals After my horrible blunder that was Journey Together, I managed to pull something good and put together a nice deck for the penultimate set