If Trump had declassified the FISA Document, as the Republicans on the Congressional Intelligence committee had asked, we’d know, but since Trump demurred, the Deep-State and the Left Win Again.
You are wrong. Why should Trump give fodder to the democRats by injecting himself in congressional investigation, which then allows Mueller to pursue obstruction to justice?
Note, Trump did NOT INITIATE firing Comey. He waited until that firing recommendation came from DOJ. If anything, Trump is a master of timing.
Trump already knows Mueller has nothing on him, so no need to initiate any actions which will be construed as attempt to make Mueller investigation look bad.
It is also possible, since Trump is smarter than me and you, and since he is a master of timing, he could declassify those redacted documents at appropriate time (such as 2-3 weeks before election).