They could have saved thousands of man hours and millions of dollars just by going back to work for Blizzard if all they intended to do was emulate them or make a WOW expansion. Whats next over the horizen, Pandas?
Nah, next are Kodans!
I guess that will be the Lord of the Frozen Toilet expansion then?
Mists Of Kodanaria! 
They could have saved thousands of man hours and millions of dollars just by going back to work for Blizzard if all they intended to do was emulate them or make a WOW expansion. Whats next over the horizen, Pandas?
Nah, next are Kodans!
what is the use of white, blue, green items in game? they are not connected, u cant upgrade from blue 80 item + some mats = green 80 item, usually skins are worst than high end gear, stats are lower! at the end u sell them, or salvage them!
this is same in most mmo games, thats the big problem! they need to make really item progression/upgrade, for example:
- u have 3 tiers of items, starting/plain (white), medium/buffed (blue), end game (green)!
- u can only get white from drops or professions or WvW or dungeons, and only these can be sold on TP!
- u need to gather specific material so u can upgrade ur white to blue item, and this can be done if ur right profession, or trough some NPC, or something else
- after that u can upgrade blue to green, and so on…!
- u cant sell any item past whites! economy is still saved cos crafters will make white items and sell them on TP! (different base stats, or skins, …)
- u can have sockets, have gems/runes, similar progression as items
- different dungeons for different white item stats/skins, and different mats upgrades
this is just for u to get idea, how it could be done item progression, where all tiers r connected, and lower items wont get obsolete, economy stays the same, dungeons wont become obsolete, player base is happy, …!
OFC, there must not be huge difference in stats between item tiers, only more epic looks, achievement or prestige!