The chance of having a nitro boost failure, specifically a rocket leak seems way too high. Maybe I'm just unlucky, but it has caused me A LOT of trouble since I became an engineer. Yes, maybe it is a sacrifice for having a super speed boost cooldown, but why should engineers have to suffer when no other profession does for their bonuses.
It's just that since I've had the ability to nitro boost, it has basically fucked me several times when it was very important for me to stay alive. Those count as heroic attempts, 25 man Ulduar soloing attempts, which by the way are not easy as an elemental shaman, and PvP flukes.
All I'm asking for is other people's opinion on the nitro boosts, and if they have experienced similar events that I have. If you have as well, then it may not just be bad RNG, but a broken WoW mechanic that needs to be addressed.