If I were to lead a study in Revelation I would present the two major views (with labels) which divide mainly into "it is in the future" and "it is in the past" without bias.
I would also present all the scriptures that speak of the same events discussing how each view interprets those scriptures.
I would try very hard not to present my own personal view until the end at which time I would ask the others to share their personal view if they have or had decided upon one.
I actually see three major views, maybe four: it is in the future, it is in the past, and it is symbolic. Amill, for example, is neither future nor past--it is present, and symbolic. This makes Revelation relevant to our Christian life today, end times or no end times.
I wouldn't go so far as to say that no one can understand Revelation. After all, then why write it? But we do have one highly underrated passage in Revelation to highlight my point: the Seven Thunders (Revelation 10). John is not allowed to write down what the Seven Thunders say. So why did John write it down at all? In grade school, did you ever have a friend try and annoy you by saying, "Hey, I have a secret. And I'm not going to tell you what it is"? Then why even bring it up?? We explicitly see--in a book called "Revelation", ironically enough--God NOT revealing something to us. Revealed to John, but not to us. So we know, for a fact, of at least one passage in Revelation which everyone is NOT supposed to understand. My goal at the end of the study is that, if people still do not understand Revelation (or parts of it) at the end of it, that it be because God did not choose to reveal it to us--not because we were not listening. I think that's the important thing: that we listen to God. And if God speaks, then He speaks. If He doesn't, then He doesn't. And if He changes the subject, then we listen to what He says about the new subject.
I agree about not presenting my personal view until the end; that's what I was thinking. I don't want my personal view to hold any more weight than anyone else's just because I was chosen to lead it.
p.s. the fourth "major" view, which is not major at all, really, is the possibility that Revelation is, in fact, fallible. And/or that we are simply not the intended audience. Put another way: there is no Millennium, that is an error. This dives more into apologetics, or why do we believe what we believe? Why do we believe that the Bible in its present Protestant canonical form is the inerrant, divinely inspired Word of God? I don't think I will spend any time on this one, because that could rabbit-trail into a different topic. Studying apologetics is not the same as studying Revelation. Related, but not the same.