indeed, monk healing orb seems kinda like blizz thought monks weren't running for the orbs enough.... so they'd teach them... orbs only last 10 secs. Now monks officially have a light well (in effect, at least in how lame those are).
The only decent use for the Healing Spheres was to place them down pre-battle (particularly when soloing) so you could walk over them to heal yourself, now that you can't do that the spell isn't even worth having on your bars, unless they've increased the healing of it also.
OMG I just made a thread last month about updating racial mount models to look good with the updated player models! These are fantastic! Now do worgs and nightsabers and raptors and all that jazz! Man this is going to rock in a few years when all the models are updated.
Seems to me like they might just be trying to make "Glyph of Enduring Healing Sphere" attractive. Without it, the spheres will not stick around very long. With it, you'll get behavior pretty similar to what you see today.
(Unless they change that glyph, or I'm misunderstanding how it works.)
I saw no point in that glyph before, as the spheres already lasted long enough. Now, I see a reason to get it.