If you have the dough, you might want to consider upgrading your toons to dual spec. I think that would give you the ability to customize on the fly and you can do some testing on different specs on the same run. From what I understand, it's a five second spell that will swap your spec. What I don't know is if you still have to pay if you want to tweak one of your two specs.

In direct response, it looks like you are going from specialized to hybrid (at least in the case of the druid) to hybrid. I guess what I am thinking is you are going from two dedicated healers to one dedicated and two hybrids. I am not sure how the math plays out but the marginal benefit of the DPS gain you get from the moves, might night be worth it. At least if you went dual spec, you could try it out and go back right away if it doesn't work. Anyway, that's the $0.02 from a rookie.