Yes and no, because you're going to be getting grouped with people of similar ratings, after enough games the good players will float to the top and the bad players will continue to squaler where they belong. For long seasons ( like what I expect will be happening such as the case with preseason) this will create the seperation of people so everyone gets a somewhat competitive match based on their ratings. Bad people will not continue to get carried up to infect the higher ranks. It just takes a long time, but trust me it will be worth it once everyone is geared.
How would you - and how will Bioware, while we're at it - determine an individual player's rating once solo queueing is possible?