Well the most information we have is this: How Competitive Matchmaking and Rating Works (Season 27)
Though there haven’t been any official words by Blizzard regarding this.
You’re mostly dependent on your team, this pretty much win/loss based.
Though there are some small calculations that could boost individual performance under Diamond.
If a player were to “throw” then we’d need an automatic system to distinguish this, though people can have a bad day so we can’t have any false positives.
Then next to that you can abuse leaving with friends or so, meaning you won’t be tanked of your SR.
Again, it’s mostly team calculated… so if your team has a leaver then that affects you too. But there most likely is something with the MMR system that makes you easily gain your SR back after a leaver.
And well you could just group up beforehand to lower your chances of getting a leaver.
The SR/MMR gained from individual performance is barely noticeable though this makes it easier for lower ranks to climb.
There is a barrier where teamplay becomes required, it seems like Blizzard has decided that Diamond is this so-called barrier.
Even if it barely affects the ranking of most players, it can still have people climb a bit easier in ranks where teamplay almost doesn’t exist.
The matchmaker tries to have somewhat the same average SR on both teams.
Team 1 has 2503 and Team 2 has 2507
Those few numbers don’t mean anything at all, but team SR technically already exists.
I think the current system cannot be improved much further, though then again it’s not like it’s my job to see how this could be improved.
This would mean that the “team-based calculations for MMR/SR” you’ve just been suggesting would most likely make this game worse for you.
The game doesn’t like solo-queuing as much since it does not take groups into account whilst matching players, it just blindly looks at the numbers and other calculations.
Your individual performance might be good, but are you actually playing the correct role within your team? And that’s the thing you should be improving on, since a team needs to make up for each others mistakes.
Right this proves even further the individual performance part.
Competitive 6v6 elimination doesn’t focus on map knowledge nor working with your team a lot.
It’s pretty much only a simplistic fight, which mostly focuses on individual performance. Most likely why you ranked in Platinum for this game mode.
Open Queue isn’t as reliant on specific roles, meaning anyone could take up a role to compensate for another player if they aren’t doing so well. Though in Role Queue everyone is stuck on a certain role, so if one role isn’t doing well then another role can’t compensate for that.
So that means this mode is more team reliant than the 6v6 elimination.
Might even be proving that you could be the issue, though since i don’t have any information i’m not going to point anyone though it’s not something to disregard certainly.
Right, this would also require revamping the entire system as is.
It’s designed around thinking a new account has a new player, becoming more precise with the more statistics (aka time) on the account.
So i don’t see why you would want to reset your MMR/SR if you’d get placed in pretty much the same place after you hit the same playtime.
Which of course won’t be the case with this system since you’re probably improving over time, and well that would just mean you could’ve gotten there in the same amount of time on your account pre-reset.
TL;DR: Group up beforehand, try to friend some people and find a good team synergy. Seems like you have an issue in team situations whilst your individual performance is just fine.