What would it take to fix (the community's opinion of) the Hierotek Circle team?

I'm putting together my Necrons right now, but I was well aware even as I was buying the box that the team is generally considered pretty bad. This got me wondering where the "bad" parts are, and what it would take to "fix" the team. I understand YMMV with gameplay, and no buffs are a substitute for better tactics, but I gotta ask.

Would it be increasing movement to 3●? Would Regen Protocols need to be more consistent? What needs to happen to the Deathmark to bring them up to speed?