IMO - S. Corp members need the Herealds.
Brother Eye did get hacked, but booted out the hacker. He was reprogrammed thanks to Alex Luther (IRRC, I could be wrong).
Let alone the fact that, if a single ring falls to brother eye, they could assimilate that tech the way New Gods tech was assimilated. Or even worse a Manhunter.
That would lead to a brutal combo of simulating the ring's power, draining opposing ringslingers, and worse yet, a defenseless S. Corp member becomes vulnerable to OMAC infection.