I think at that point it might be worth playing sub server. Although it has less "content" due to the lack of some cash shop items, the gap only gap would be in gear.soo, they were thinking: "hey, you can actually get some CS items without paying anything in this game, what if we make a system which rewards only the paying players, so that the gap will be even bigger between free and p2w players"
5/7 would p2w again