I think my current build is the "best," at least for me:

Fire 4/5 (no scorch)
Ice 4/5 (no shatter)
Time 4/5 (no bomb)
Shield 4/5 (no displacement)

Knowledge 5/5
Agility 4/5
Damage 5/5
Might 5/5

I tried running without hardened shielding, and elites are much easier with it. The two seconds of invulnerability are critical for dropping time bomb in a great place, moving around or for avoiding a 1 hit KO.

And damage 5/5 is better than critical 5/5.