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.