By the look of it the game is all about grinding and nothing else.
You get never enouth of power , caps at lv 50? come to store and get better equipment to grind some more.
Old server? Here new location for you to cap your power and spend money once again. And so long...
Bottom line you grind and game company makes money of you. All they do in game to make you grind some more.
The more time you spend grinding the more money they make.
If you want do something else in game like fish and pirat the sea or PvP then download PC version of the game.
On PC there is something to do for everyone. Ofcourse grind present there too but not limeted to it all together as there many various profesions to chose from to play the way you want to.