This is pretty much why staff stay as quiet as possible on things, for as long as possible. Anything on the server can be subject to change, for the most part players haven't been donating for Lordaeron for whatever reason(s) but at the same time are complaining about this and that while the costs are still there/increase, in other words taking but not giving.
Now players that have donated for Lordaeron get to skip queues for about 30 days which to me is a decent reward for players supporting the server in spite of decreased purchasing power (I'm not sure if players that donate after the fact get the same effect). The players that donated for Lordaeron with little to no previous incentive are a special kind of supporter and now they are getting temporary "thank you".
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Paying-to-win/pay-to-play, really? If queue skipping applies only to "since launch donators" how is it pay-to-win or pay-to-play, those people are being rewarded pretty much for being selfless.