I would agree that Dragon Raja is one of the games with best graphic in mobile currently, even compared to Genshin Impact or Tower of Fantasy. The level of detail of 3D model of the character here is stunning.
However, that would be the easiest pro among other many cons. At first, you might be amazed by all various features in the game, but the longer you play the more repetitive you would find yourself playing this game, like repeating all the dailies, doing the world bosses, or other weekly club activities.
I have played long enough in Taiwan server as a completely F2P gamer, and moved to SEA server hoping that spend some money on this game might give any different experiences, like maybe I can get some of those beautiful outfits or hairstyles, but sigh~ (~_~;)・・・ my expectation remains as expectation. You need to spend quite significant amount of money to get the outfits that you want, you might even think it's better to save the money to buy yourself real outfits to wear. And funny enough, the more I spend the money I realized I get additional benefits that previously I didn't get, like I begin sharing some red packets in team randomly during dailies, or after defeating world bosses, I could get gear drops. Well, it's obvious that Dragon Raja is heavily P2W.