Very interesting find, thanks for sharing.
I believe that the mentioned overclassification (and I find it normal somehow that in case of doubt INTEL people always chose the highest classification category possible) and combined with not setting a declassification or downclassification date (which, as can be seen by the examples, would make a lot of sense and in theory is obligatory) really disrupts the *necessary* information flow to the people or agencies that have to know.
It would probably good money spent to review every classified (at this stage, secret and below) document lets say every 5 years and declass where no further risk can be perceived (which obviously seems to be the case in the majority of documents published by WikiLeaks ion OCT 22).
Not only would this facilitate information flow to where needed, also the transparency and hence the credibility of the administration would receive a boost and the temptation to "leak" would drastically diminish.
Rattler