Stack exchange is a fantastic resource for technical questions.
CD could definitely learn from the Stack Exchange answer process on how to filter the best responses on technical questions. Over the years the ChiefDelphi signal to noise ratio has been reduced to too much noise. Filtering responses base on upvotes is a great way to direct people to the best answer.
Forming a FIRST related SE (stackexchange) site is a bit of a stretch because the robotics SE site has not progressed passed the beta stage.
I encourage you to post your FIRST questions to the robotics SE site and help build a single robotics SE site pass the beta stage.
Here is the link to the
Robotics SE Beta site.
A dedicated crew of volunteers could possibly transfer over the best Chief Delphi questions onto the Robotics SE site to help share the knowledge.