Before the change you could just refill the Celestial Avatar resource bar by doing your rotation, even out of combat: healing your spirits would get you to full.
Now when playing the build solo you'll either have trouble getting your CA bar full or run out of alac before it gets off cooldown, as far as I can tell.
Perhaps it's a rotation issue but I preferred CA to be used reactive and not "mandatory" as well.
Could also be a scaling mistake, we went from 10 seconds of might from that trait to not even 2 seconds of alac I think.
I'm gonna start gearing up my Mechanist while we wait for a rebalance.