I mean, giving into people complaining doesn’t exactly scream, “I’ve got a spine.” 
There are some ways they could likely enforce faction balance and population numbers, if there was more reason to do so than not. At this point, I’d be surprised if the numbers of people quitting is significant in relation to the numbers paying for transfers.
In any case, people who are going to continue playing have probably already rerolled, transferred, or are looking into it, and those who are going to quit, may well have been going to quit regardless.
What I personally hope for for SoM is no transfers at all, but we’ll see how that plays out!