The much-ballyhooed and over-discussed topic of theological triage has received as much attention in Southern Baptist blogging as any other topic in the past five years. In the preponderance of treatments that I have read (and I've read a lot of them) the most popular "for example" listed in the category of tertiary doctrines has had to do with the particulars of eschatology. I agree that a person's opinion of the sequencing of rapture, millennium, judgment, etc., belongs in the category of doctrines for which diverse opinions can and should easily coexist within a particular church. This is indeed a tertiary issue.
And yet, I fear that some people equate "tertiary" with "unimportant." As though, the tertiary issues are those on which preachers shouldn't preach, the convinced shouldn't advocate, believers shouldn't trust, and scholars shouldn't bother to publish. God forbid! "Theological triage" is hopefully not unrelated to the importance of particular doctrines, but neither does that particular man-made schema even allege that it is a means by which to measure the importance of doctrines.
This is nowhere more evident than as it regards pretribulational, premillennial eschatology. One's millennial position, one's understanding of the Great Tribulation, and associated doctrinal questions like the acceptance or rejection of dispensationalism can have far-reaching impact upon a believer's entire system of theology.
We do well to remember that the Bible is not a textbook of Systematic Theology. In saying so, I do not mean to indicate that the Bible does not teach us Systematic Theology—in that sense it is not merely A textbook of Systematic Theology; it is THE textbook of Systematic Theology, for there is no good systematic theology that is not taught in the Bible. Rather, I am trying to indicate that the Bible does not come to us with chapters on Revelation, Epistemology, Theology, Anthropology, Soteriology, Ecclesiology, Eschatology, etc. The Bible comes to us with its various doctrines intricately and inextricably interwoven, often transpiring within the stories of people's lives. Whatever we might make of this, it at least means that the theological tenets of the Bible, whatever they are, are not easily separated into discrete categories. Any of them that is important makes the others important as well.
All of that was an introduction to the following link (if you didn't want wordy introductions, you came to the wrong site). Drs. Steve Lemke and David Allen have coordinated the efforts of several scholars to bring us The Return of Christ: A Premillennial Perspective. This excellent volume treats and advocates the pretribulational, premillennial understanding of eschatology. It is an important work on an important doctrine. I recommend that you read it.
Dr. Lemke has participated in a Q&A session that has been published at BibleExposition.net. That interview is available here.