I have gotten overly bronze and unranked teammates in my recent ranked matches to gold 4. I do not understand why riot has consistently given me low elo teammates while putting me against gold teammates, bronze adcs and unranked supports with sub 40% wr and yet facing gold opponents
Ouch. High uncertainty games are a bitch.
That said, Basic MMR MM does not give a shit about WR and it also can't if you want it to be fair. RNG gives no fucks about you or your experience that's the equality aspect of it.
I get wanting to be protected from this kind of game in your promos but there's no reason for a MMR system to care about promo games more then any other match.
Far as the various theories out there. "Gatekeeping" is easier to do MMR value changes during promo then looking for humans you have to hope behave as expected. "Grind" is done far easier by lowering MMR gains per match then gambleing on human behavior.
Just write it off like you would any random match. Some times your just gonna get dicked over by randomized distribution and if you add emotional value to promos its just setting yourself up for Tilt.
