I agree with Xatu. I was in the number 1 guild for a long time and got lured in by the MOBA aspect. But...there is no real challenge after a while as PVP offers no incentive so it is a big, long grind. If there was more gameplay to it then I would probably have continued but as is, it's pretty shallow. Initially it is quite fun. I deleted it about a month ago.
I keep wondering about the potential for the game. The upside is the ease of entry - it's an easy game to grasp (compared to other Moba style games), and yet the PvP match-making is absolute drivel. If they only created proper match-making instead of the implemented Local Battles you might actually see a rise in interest. This is the same problem that Terra Battle went through. They eventually implemented multiplayer but it was done too long away from launch and went through numerous iterations before it was actually done right (still isn't in a lot of ways). Terra Battle used to be my F2P of choice (until Eternal Arena came out). I'm only level 30 but I'm still enjoying the game. I'd like to finish Chapter 20 and then see if I'm in the same boat as you guys.