See new thread for 2.0 Changes - Sorcerer / Sage Healing Compendium Updated for 1.2!)

[Kaedis]

/sigh...why does this still come up. Subversion, at 3 stacks, restores a grand total of 8 * 0.3 * 10 = 24 Force. Lightning Strike costs 30 Force to cast to refresh the stack. Best-case scenario, you're losing 6 Force over simply not casting anything at all during that 1.5 seconds. Worst-case, you let the stacks fall and lose closer to 40 Force building it back up again (even more if you don't spread out the rebuild of the stacks, ~60 Force).

Subversion is NOT a healer regen ability. It can be used to provide efficient secondary dps from a healer, but if you're just trying to use it to augment your regen for healing purposes, you're playing a losing ballgame.