Sequencing can be very important in the early game, as you need to balance wanting a blazing-fast start with the need to land your larger threats
It would be a very on point deck if "Call for Backup" meant tutoring up creatures that keep your creatures alive, but running a ton of tutors wouldn't really fit the "precon-esque" environment, such decks are too consistent and will just overrun (get it) other precon-esque decks
Nobody outside of the upper echelons of WotC has the facts and data to support or refute this claim, though, so in order to support my argument, I'll illustrate with examples from a handful of MTG's game modes
Charizard ex (Special Illustration Rare) embed::[[Charizard ex (sv3pt5-199)]] Hardly a surprise to any collectors given the Pokmons everlasting and profound popularity , the Special Illustration Rare Charizard ex is the sets undisputed centerpiece
Duress I card I associate both with old school formats like extended but also a card suitably balanced that it has seen countless reprints making it modern playable and periodically a standard card too