I think it'd be largely for soloing, but i don't think its gonna help out much. While your healing blue magic will be indirectly influenced when light arts or dark arts is active, the strategems won't affect any of the blue spells.
although group cocoon would be awesome :)
it seems like you're gonna loose too many other spells in the end. if you're concerned about MAB, just go /rdm. I find that the few times i need to heal the whole group, i have stragems up. Accession + regen 2 will clean up every now and then if you're worried as well.
Edited, Feb 3rd 2008 11:24am by xRelicbanex
75's- Drg, Drk, Pld, Blu, Pup, Thf, War, Sam, Sch, Blm
Mythic WS- Drakesbane, Atonement, Expiacion, Omniscience, Stringing Pummel