As we all sit by our computers, patiently awaiting for some news about the oncoming patch wherein we get to finally kill that blazing dragon that has been a bane upon all my alts for the entire expansion, it can be difficult sometimes to find things to do. Sure, there's still a raid that not everyone has completed on heroic difficulty -- in fact, most people haven't -- yet what statistics we have access to shows that not every raid group has any interest in heroic raids. Some raid groups just want to clear out normal and be done with it. With only seven bosses to tackle, clearing our Firelands certainly isn't an all-week affair.
What to do then when the current raiding content is cleared? The number of bosses in Firelands isn't really a major concern; even with nearly double that in the first raiding tier of this expansions, several raiding groups would clear out everything available well before weekly resets. Keeping your raiders engaged in content while not overwhelming them is just as much the job of the raid leader as it is Blizzard's. There is a lot of content out in the world of Azeroth -- years worth, in fact. It's up to you to exploit it all.