Quote Originally Posted by yukikaze_yanagi View Post
Istanced dungeons ? Always existed. FFXI had a lot, even dynamis was an istance.
Quest based progression ? you don't wanna know how it's old. This is probably the only thing FFXI invented, the mass open world grind to exp (and it had a lot of flaws, let's not forget)
First instanced dungeon I remember came out with Everquest Lost Dungeons of Norrath (LDoN) if I recall correctly. (even hated them back then as well lol)

Quest based progression actually started oldschool back in text based MUDs, as did most of the other points you referred to as well