Well, I can't really offer any other tips. I can relate though, unfortunately pacing is a fine art on mage classes and I wouldn't expect it to work out perfectly always. If you are running in a static, maybe your tank isn't doing the best job?
However, I would check out the FFXIV enmity testing done here: http://kanican.livejournal.com/54094.html - Granted it was done in 1.18, a lot of it still applies and gives a lot of insight on how the enmity generation works. I'd also suggest passing it on to your glad.