7 Divines = 125 weapon damage (not even worth a normal weapon damage set bonus)
7 Impen = 1806 Crit Resistance (27% less dmg from crits) - worth almost 50% more than Transmutation 5p bonus (1304 Crit Resistance) - less than Impregnable tho, but that set is bonkers op.
7 Well-Fitted = 35% less sprint/dodge roll cost (although bundled up with medium armor passive & Tumbling CP) - cuts dodge roll cost by 1414 stamina.
I know which trait I wouldn't use, not unless using Twice-Born Star (for some reason).
Full divines is for gankers. Specifically bow gankers.
The idea is to not get hit, and kill them fast enough to not get hit
If you plan on getting hit you should use 7 Impen