I agree with most of the points in this thread... unfortunately it's unlikely ever to get read by anyone that really matters.
Some other points I might add are: playing with an alt (tank) it's pretty plain to see that just about every solo duty is designed for any job that's not a healer. You're always given a healer in the group and while that's not always a bad thing, generally speaking you as the WoL are supposed to tank and do damage. Look at the instance in 5.55 as a good example. You're paired with a DPS and a healer... so if you already are a healer, you're lacking in the dps department and you're forced to tank for your buddies, too. I doubt it will ever happen, but it would be nice if they substituted a tank for the extra healer if you're a healer... but I digress... apparently Warriors of Light are not supposed to be healers =/
Do you see Derplander ever being a healer on a trailer? Nope, neither do I. Sure, healing isn't something that usually takes the spotlight most of the time, but in this game it's just downright dull. Though, to be perfectly fair, I don't see Derplander ever being a black mage either and I could even say it's a fair bet he will never be a summoner.
While I hope that the healers will get a much needed overhaul since AST certianly is going to need one with it becoming more on the WHM side of the healing spectrum, I totally expect AST to get majorly screwed over and the other healers mostly left out in the cold. Sage already sounds like it was something thrown together that they had no clear image for just from the interviews they've had about it. So... my hopes for healing in 6.0 are pretty low T_T; I hope I'm wrong... but... something tells me I won't be.