Despite its short-lived legality, Chaos Orb remains one of the most infamous cards in Magic the Gathering history
It wasnt that Splinter Twin decks disallowed interaction, but rather that they demanded a very specific vector of interaction, and they were the lucky recipient of all of the benefits of the threat-theory/answer-theory matrix in that conflict
Shout out to Mark Poole's Forest from Commander 2017
For instance, you need to know why youre collecting the cards, what sets you may need to complete, which cards are more valuable than others, and so much more
Its not super-exciting, as you frequently want your sideboard interaction to be streamlined and efficient, particularly when combating problematic artifacts and enchantments
For example, even for the same Pikachu promo, the budget and number of candidates will change significantly between looking only at PSA 10 and including PSA 9 as a candidate. Deciding your tolerance line first reduces wasted comparisons