How do you feel about a Sideboard in EDH?

i feel like commander / edh lacks so many cool mechanics and cards from other formats due to the lack of a sideboard. The whole Set of Strixhaven felt pointless without its signature lesson & learn mechanic and i LOVED that mechanic. It brings just such a new level of tactic and strategy to the deck to build your sideboard along with your deck. Also all of the wish cards would be so cool. I know that you can just talk with your playgroup and rule 0 them in but i'm just not a fan of that. Just make it official. what do you think about it?