Still just in the wee AT levels, but in the scope of things, how does one go about getting legends for other classes?
And how would you say that these alternative methods compare to the difficulty from farming them from the Astral?
Well you get legendary gear for other classes from Melting Isles, Arena of Death, or Gorluxor's Tower. Healer and shaman gear is in those places as well.
I guess how easy they are to get depends on the guild you are in. Arena of Death is probably the easiest, but also the most random. Melting Isles is a joke, and dominated by 1 or 2 guilds that really don't even need them anyway. Gorluxor's Tower is a 24 man raid instance, while astral can be completed with a group of 6.
Your best bet as a new end-game healer or shaman right now would be to do astral and AoD. Other classes are going to have to rely on getting that gear from AoD or GT.