First off, Enkindle doesn't do nearly enough enmity to snap threat away from a tank...vs a cure 2. The only time a DPS can take threat away from a tank is when they try, and blow as much crap as possible to out threat the tank...healers cast one medica or one other spell and they shoot straight up the chart. Its called game mechanics, healing generates way more enmity than a DPS spell. I pop cool downs at the start of the fight to help the tank and the healer out...you think about your DPS

Second of all, you're rotation is a pure mess. You don't need to constantly be blowing GCD's, you don't need to be spamming ruin 2. You throw enkindle out so you can HAVE it again during the fight faster. What you're doing is a big no-no. Their is no efficiency, just you casting away. You obviously haven't studied your class because your entire rotation is around having Garuda up, when Ifrit fits in well at the start of some fights. Its why I save my swiftcast for after the starting burst.