I've been thinking hard about this one. Every way I look at it, I don't see how having civilians cross in at the O6 or higher-level is going to translate to meaningful change for Cyber.
I've got Cyber O6's that I know now agitating for meaningful changes: real mission assurance, real network advancements, etc. They can't get it done and they've been in the system the whole time! What's some civilian with no history, contacts and context going to bring? Dear Lord.. if he/she starts on staff without ever having supported an operational mission... the hate we get now will only be magnified because the leader only isn't in touch... they've NEVER been in touch.
We aren't like civilian companies where we can dump one vendor for another. We're beholden to DISA for services. We're beholden to our MAJCOM/NAF for mission requirements. We're beholden to AFSPC/24AF for "cyber mission requirements." Finally we're beholden to the IMSC for... something.
Couple the serious mission challenges to the promotion and "up-or-out" and you're going to demoralize the cyber force. We've already got enough problems with not having a career cyber person in cyber leadership. Now you're going to shift some of these few O6 slots to civilians coming in? How exactly am I supposed to believe there's any credibility at all with AF Cyber Leadership if this happens? It's already difficult enough as it is and I've been told very good things about the folks in charge.
Finally I don't know many "cyber leadership" civilians who could do well on our PT systems.
Hire civilians as non-line tech advisers, increase the industry internship opportunities, allow more sabbaticals, develop/promote Technical MS programs (AFIT doesn't count), provide mid-level (vs high-level) cyber leadership/operations training (less demanding CNODP/Cyber WIC) and get some damn career cyber leadership visible to the force.
I will note none of these even start to address the problem with current GS-civilians who are retired O's and SNCO's who refuse to do anything meaningful to move Cyber into the current decade. For them the AF hasn't changed since the day it retired, and by God it'll be the same when they retire again in 10/20/30 years.