*They’re not part of EU. A part of Russia is in Europe, but they’re not part of the Union whatsoever.
As for the mixing, they were a part of the gigantic EU matchmaking pool the first week of Classic BGs. There were a lot of complaints, rightfully so, and they were segregated just like in Retail’s matchmaking after that.
The solution is NEVER to mix them with the rest. The REAL solution is for them to learn English like the rest of the world, but since that’s never going to happen, the practical solution is to remove them entirely from the matchmaking pool.
This haphazard measure is not enough. And yeah, they can still premade larger than the limit, the same way it was done for a long time in retail, but that doesn’t mean it’s always like that.
Yes, they do have a few overpopulated servers even though they don’t have a lot of servers to begin with, so you can sometimes see a lot of the same server on their side as a pure coincidence. However, that doesn’t mean they can’t do the premade exploits like EU and NA used before the hotfixes. The hotfixes batches up the matchmaking, in order to artificially provide more time for the pool of players you can get matched up with to increase in size. The hotfixes also reduced the priority on the window of time of people queuing up for the matchmaking, so one who queued up 5 minutes ago can get matched up with one who signed up 1 minute ago when in the past it would put heavier emphasis on matching up those who queued up closer to the same time for a steadier average wait time.
But because their pool is so small to begin with, regardless of this increased time, they can still reduce the pool enough for them to have a high chance of getting a large portion of a premade into the same AV.
So the hotfixes don’t prevent it in an already-small matchmaking pool like theirs, like it does for a large population like in the gigantic EU matchmaking pool.
It’s a problem they’ve ignored for YEARS in retail, until the players themselves grew so tired of it that they simply stopped doing it together with the way rewards in unrated BGs became more and more diluted over time and reduced significance in the reward scheme changes as well.
But of course, the Blizzard puppets kept saying “no no, it’s never a premade, they can’t do premades, don’t be silly, the limit set by Blizzard is absolute” whenever it was brought up on the forum so it never gained traction.
The difference now is that EU and NA alliance showed just how real those exploits are, so hopefully people will suspect overly coordinated behavior and higher than “normal” gear average more than they used to in retail.