I agree with this. The OP says most of the "bad apples" are around 50 now, mostly because they have run the content countless times by now and find it cumbersome when other 50's aren't playing their role or haven't researched a fight (which I can kind of understand, even though I'm still mid level).

When the subs begin to take effect, there will be a decrease in population, which I can only speculate will include mostly lvl 50's that rushed to the end and got bored after saying "first!!!11!" in the comments. It might then take a few months to weed out the negative nancy's and debbie downer's, but in the end (as with most MMOs), it will be a population of the more die hard fans; the ones that want to play for entertainment, not because they jumped on a bandwagon.

Just give it some time.