Kaleb....I've given it some thought and if I understood your comment regarding Maccabean authorship of Daniel correctly, I can't agree, at least without some more explanation. The Qumran community is the sticking point. Many have remarked that the character Daniel was important to the community, not just copies of the book we know but other versions of stories involving Daniel. That element plus the composite nature of the book of Daniel leads me to suspect someone associated with or esteemed by that community was the compiler/redactor during the duress of Antiochus.
The "Teacher of Right" would be a fine candidate, but who knows. If that is correct it reasonably could be a subsequent leader (or himself) that makes the additional calculation after initial disappointment made it necessary. In my mind I see someone with pious intentions using the literary device of pseudonymity to comfort a distressed people. I'm seeing a collection of tales and prophecy collected and redacted to be relevant. Noticeable also is the absence of any call to arms or glorification of armed resistance, but patient waiting for heaven to end the times of distress. The Qumran community in contrast to the Maccabeans were pacifists.
Given the absence of any witness to Daniel the prophet prior to that community (Unknown to Ben Sirach in his list of heroes) it makes sense to at least consider there for an origin.
After the Romans entered the scene, similarly pious Essenes (probably directly linked) were well esteemed as keepers of the Law brought the work to the larger Jewish awareness, some of whom subsequently misinterpreted it to be about Rome.
What do you think?