After further discussion about Aegislash's impact on the OU metagame with other tier leaders, a new idea popped up: unban Aegislash but ban the move King's Shield. It seems that most of the arguments made against Aegislash's return in OU are based either on King's Shield forcing many 50/50 scenarios or Aegislash's virtual 720 total base statistics.
Banning the move King's Shield would solve both of the aforementioned problems, since Aegislash wouldn't be allowed to revert into Shield form after attacking, while theoretically still providing a solid check to a plethora of offensive threats.
We're considering giving qualfied voters the possibility to opt for a third option: "ban King's Shield", other than the standard "ban" and "do not ban". Before someone objects that this is a complex ban, let me clarify that we're not considering the ban of King's Shield on just Aegislash, but a blanket ban on the move King's Shield (which is only learnt by Aegislash and Smeargle anyway).
Do note that, at the current moment, this is just an idea. Take it into consideration and give us your feedback.