I actually don't understand why people are so mad or angry I would say.
With this new patch, it doesn't care, do u play PP or ES, the time u will get to lvl 76 is +-4 days(the difference from ES or PP 20 days or 24 days as example is not a huge difference), because u farm rb's whole day, everyday, ppl invite 3 pp's in one party, and 7 ee in another one. So why even making 2 groups? We can make restrictions like, nobody can change to dwarfs, nobody can change to Dominator except pp/ee/se/bish/wc. And that's all.
CP's will have better time,since they wont waste time searching for another BD for 10 weeks, right? People would not be scared to change to SPS or sorc (least played mage class) and try it out and if they don't like it, they can go back on dagger class for example. But as Sano said, I think some ppl will get mad and few of them will cry so much on forum, that most ppl will follow them since they don't have their own opinion on it. People are sheep, what can u do..
But if 1 group is impossible, I vote for 2 groups. I want to see more mages, I want to see more daggers, I want to see more tanks
edit: bUT Tk AnD PAL ArE OP aT lVL 80. Duuuh, How many ppl will get to lvl 80? Deviate tanks, RS maybe? Chinese? Thats all, most ppl wont get to lvl 79 anytime soon so I don't see any problem at all.