Suggestion: Boss based id's instead of instance based id's for raids.
I think it would be infinitely better player experience if we could have only rewards for first boss kill in week, like on retail.
So after reset you can find a group, do icc and kill 4/12 bosses and get frost/loot for 4 bosses, after party disbands (for what ever reason) you can find another party that's maybe starting fresh and kill 7/12 bosses but you would only get reward for ones you haven't already killed.
There would be more players queueing to do raids, it gets frustrating having to assemble party for raiding for about 1.5h and then raid for 2-4 hours, it's very time consuming.