Quote Originally Posted by MariyaShidou View Post
They make it instanced because most of the time you won't want to/don't have the mean to share the drop with another person. How do you share a much coveted helmet drop with 10 other person? Each person take a piece of the helmet? Not to mention I will happily relieve your hard work by coming at the last minute and hit the NM once to ninja your drop.

That's why they will still have open world NM but more coveted stuff will be instanced.
Well, of course it would have to be thought out better than I have, but I'm also not a game developer (yet. Huzzah school!)

From what I've seen in ArenaNet's video here:
http://www.youtube.com/watch?v=XUVLclPDCBE (Skip ahead to 4:36~ish)

You can see that once the Shatterer is killed a big chest drops, and everyone goes to it and receives a reward useful to their class based on how much effort they put into it. Can you imagine how awesome big fights like this would be in FFXIV? Would be much more fun instead of ALWAYS fighting over a boss claim.