Not if they intend to copy it no, but there's more to XI than just the battle system and how easy that is to forget when that's all anyone ever manages to talk about. The storyline, the difference in campaigns, including reward, reputation, and questing and how everything came together in the end.

Those are all things XIV could benefit from by implementing them instead of using these apparent 'new age' mmo tactics of quest grind > instance > instant reward.

Every time I hear such comments about XI being dead and gone makes me wonder if anyone's actually reading these posts. You can separate XI's gameplay from the content, you know? it was beautiful, engaging, and involved. Don't tell me that game developers are too lazy these days to come up with a story to go along with a dungeon. If that's called "asking too much" then really, what the hell?

TL;DR
To reiterate, the request and longing is for any content to have at least a LITTLE depth to it, rather than be another boring copy+paste of previous content, and or content used in other MMO's.

FFS, there is nothing wrong with instanced material, the thing is like Zan's signature says, we'd like a little more FINAL FANTASY in our Final fantasy XIV.