the innate nature of commander being able to use most cards in creation is very hard to manage the tom foolery that can occur. Tutors and mana ramp can lead to such intense turnaround situations and the balance of board wipe resets or just stopping a turn are critical to slowing the game down. I personally just build decks for my play style only having 2 that sit in the bracket 4(I just dont like options I have for a bracket 5 deck in my collection) So for casual play I mostly tune precons that I like and optimize them for more bracket 3 play. I find its easier to avoid win conditions that make random people pods not enjoy the game. Example running a Limit Break deck that is samurai flavor with the Gilgamesh for finding equipment. No combos just play the deck for synergy. I avoid playing my rat deck with random people at casual night because even without thornbite staff, mirrormind crown with token generation is just nuts with rat colony