A whitelist should provide access to additional benefits within a server, not present a barrier to entry for newer players that could stunt the growth of the I&A server.
For example: A newer player, being competent but having never played on the server before, tries to fly CAS late one night and can't because they've not been tested/approved/annointed by staff Etc. That player then goes and plays on another server because their experience was affected by this rule.
I also fail to see the return on time invested to implement this versus the desired impact on the server considering the current limited role CAS has in I&A.
If you really want to address the issue of bad CAS pilots then provide helpful guidance and advice to newer players on how to improve instead of tearing them down.
I've witnessed you going off the rails on other pilots, and frankly it's not helpful in the least.
We should show the same patience others have shown newer players who joined the server, otherwise no real progress will be made.
EDIT: Generalised the last sentence, because decibel isn't the only player with this issue.