Some concerns have been expressed recently over the abysmally low drop rate of the Big Love Rocket. The drop rate was thought to be lower than 1-2% and Bornakk chimed in on the forums to confirm it. I'm not much of a big mount fanatic myself. The only rare one I have is the Obsidian Drake mount from Sartharion with 3 Drakes up. Now that I think about it though, I have yet to see anyone in Dalaran ride around with one of these rockets. As it stands, the drop rate of this rocket mount will not be raised anytime in the near future. Heck, even if they did, I know with my luck I would never see one of these.
If you're curious, as of today, there have only been 74 players with the Big Love Rocket Feat of Strength across North America and Europe. North America has seen 17 Big Love Rockets compared to the 54 for European players.
if you want to read more about drop chance and probability, check out Brian's post about it back in January. It's guaranteed to make your head spin!