well if they want to keep "most people" they need some of everything. not everyone wants to do just boss fights or run around in a little cave all day to get equipment you dont need, since you did the instance without it.

look at newer games like tera they have open world & instances plus pvp, big seamless world. next year elder scrolls online is going more of the real MMO with public dungeons there even going to use instances. if ffxiv is going mostly instances its pertty much doomed when theres already games with everything and can handle mass numbers of people at any given moment. and SE is gonna stay with one wow gimick. every heavily instanced game died or went F2P is something to think about.

if they do limit them selfs there just being stubborn and want to keep people away. we'll find out in january when 2.0 is 100% live.

p.s people are scared of challenges & scared competition and are anti social.