In my oppinion, when you begin this game you are too excited (mostly because of title). Yes it has too much potential and plenty of thinks to do, but after 2 maybe 3 months the most of people I believe will start to getting bored.
1) It has a very easy and fast lvl system.
Its too easy to finish the lvl system. I know that there is a champion system after lvl 50 but come on after 50 lvl and 160 champion point you can wear everything and after 300cp you can do everything in game (Higher cp is only for pvp)
2) It has too many trash.
Too many sets that is no needed, too many crafting materials that is no needed after the first month. whats the point of having that much material for armors if you only need the final materials.
You can make the set made by the user. like I have an armor and this armor have 3 slots, use runes to give them stats by the parts you wear, the materials will give the armor the level and the max slots.
3) food and drinks that actualy can do the same thinks. You can have one food or drink buff and in the end you make foods that can offer max stat and regen. I imagine the idia was to have one buff for max stat or regen. make the food and drink 2 seperated buff that will work together, the food only would give max stat and the drink regen stat, so you can combine a food and a drink buff in the same time. that the way to make them both usefull.
I just want to share my opinion with you.