While i'm no expert, I can help anyone on the Siren server with Scholar/Summoner and Bard rotations. I will be able to help with Machinist soonish too once I myself get to 60, but I can help you with a good rotation up to 50, at least for now. All of these jobs specialize in AoE rotations, barring healing for Scholar. So if you feel you want some advice feel free to ask.