I am fully geared in Celestial , with celestial/ascended jewelry as well as a celestial Bifrost, superior sigil of fire/full set of scholar runes
Specced Full Air 0/30/0/20/20
I generally run with my guild in WvW (SG on JQ) milage may vary based on play style but I have high burst and decent survivability with this build and the ability to switch roles from support, to offensive, to team to 1v1 or 1vX pretty easily.
I don’t think you need to go with a standard build, or optimize against build/weapon type to understand the utility of the celestial gear, I’ve switched my traits up a number of times to try different builds out.
What I concluded is this: The beauty of celestial gear is that you are not locked into a gear set, celestial optimizes to your build no matter your role or how you play or weapon set.
For me this realization validated the time investment for gearing out in celestial.
and justified my investment in like 8k of the crystals when they were cheap