IF I have a proc ready. IF is the huge word. IF I am holding a Proc, I'm ALREADY losing DPS unless RNG was kind and gave me a proc the instant a mechanic forcing us to move applies. Also, Ruin 2 isn't the only thing going for your mobility. Already mentioned the whole DoTs + Egi thing. I've never had an instance in which all of my dots fell off with in 2-3 seconds, ever, and I can't think of any mechanics that force me to move longer than that.

About the Mana issues, I do think they need an Energydrain buff, but I don't see the problem with using an Hi-Elixir with 2 Energy Drains. Each class must adjust accordingly and if they can't, they player must be focused first before the job.