Call them Flashpoints, Dungeons, Raids, or Instances, what it means is it's CLOSED for you and your party, without interruption. Who wouldn't like the option to go into single player-esque mode? You are minding your own business, until a lightsaber is shoved through your stomach, or someone thinks that it's a great idea to kill the quest giver (assuming the possibility). Sure, you run into those that choose to disrupt your game time, rather then lend a hand, but what about those who are playing to make friends?
Instancing, the closed world, single player, leave me alone time. You can get a lot done in this time, without worrying about anyone bothering you, or needing to rely on your buddy to log on and give you a hand. But if this is what you want, why not play a single player game? You will get the same immersion, and do not have to pay a monthly fee. But without a monthly fee, the game you are playing will hardly be updated, and you might possibly be bored in no time, which comes to a predicament: Switch to MMO, or deal with it and wait for another big game. I have had my fun in single player games, but I usually try to zoom through them as fast as possible, so I could justify my purchase by beating it, but I fight through a lot of the boring game play. I guess I am just MMO oriented now.
But what about those who are interested in the MMO portion of the game? The non-instanced, mass amount of players in sight, ask for help anywhere anytime. From the footage we have seen, the flashpoint of the Sith and Bounty Hunter, they are in a flashpoint. Which could be a major story quest, in that case my opinion is that it SHOULD be closed. Major Quests, certain party quests, raids, some but not all dungeons, should be instanced. Those parts most likely offer massive information in your class quests. But a good bulk of us are looking forward to an open world to have fun and meet people in
So my question is, how do you think instancing should be handled? My statement of the major quests, raids, etc. Or do you want a more closed game?