I'm generally in agreement with you that complete transparency isn't always appropriate. I've argued this point before (and lost) but I still feel the same. Transparency is often good, but not always. I don't have any issues with Senior Admin applications being public, and if the issue is OPs voting then we can attach less weight to these votes.
As for forum sanctions and permban requests, I'm conflicted. With forum sanction requests, we are not really seeing ways to crash the server, or IP addresses etc. so I don't necessarily think that needs to be kept private. I think you make a fair point with permban requests. Also, how many people who have permban requests made against them actually argue on the request? I don't know.