I believe pay to win is fine. IMHO its a good model to make money. The only big problem i can see is if you pay to win and a "bug happens" you just happen to lose the money you put in. Customer support has been deleting tickets and/or replying that they cannot do anything about it and what ever money was put into the game…
Even when a PWE customer service rep talked to me about my ticket...they just said that the currency is gone and there is nothing they can do about it.