Yes, many characters do not match their cost and die to an accidental Orbital Strike......having said that, in Apoc, getting as many blast markers you can on a target is vital. Abilities like rerolling hits and wounds is huge.
In my last game I rolled the Warmaster trait of extending my aura 6". My opponent and I both agreed that was an incredible trait to conbine with Lugft Huron's reroll hits ability while he was within 12" of two detachments. (He hid behind some crates and was out of LOS. My opponent had Wall of Martyrs, but never did target Huron).
Captains and Lieutenants are vital for their rerolls
Librarians are vital for asset cards
Ancients are vital for Leadership passing (bigger deal than we expected and they are characters for generating cards)
Astra Mil Commanders have draw card abilities which is solid. I like Commissar Yarrick as he has leadership ability and rerolls of 1