If absolutely everything, including Enochian, is down, you have to revert to the ARR F3 > F1* > B3 rotation. If Enochian is up but everything else is down, that's correct. I wouldn't take T2 and B1 completely off, but relegate them somewhere pretty far from normal. You can run into situations where you can't hold a T3proc for UI phase, so you use it, then transition to UI3 where casting Thunder would be a DPS loss. You can either pray for a fast tick and go straight to B4 or play it safe and B1. Also T2 is used in Leroy's opener if you Flare, but other than that I can't think of a time when it'd be mandatory to cast. If you somehow get super screwed with MP ticks and needed but didn't use T2, I'd say just go into AF3, F4 as much as you can without F1 (since you're lacking some MP), then B3 and pretend the bad tick never happened.
