I didn't see a thread about this being added, but for me it's a major game changer in the way I play Bard and Ninja. I'm no longer guessing when I need to play a TP song or waiting until someone asks for TP. I can plan ahead and choose the perfect moment to fire off the song.
If you can't tell, I'm very happy they finally added this. Now if only they would make Frontlines queue pull from across all the servers combined instead of the data center groupings, 4 times now I've queued for over 300 minutes for some "easy" E-Tomes with no success. Not that it's a big deal since I'm leveling crafting or gathering while I have the queue going, but if I didn't have anything else to do I'd be a sad panda.