The original film, Boondock Saints, showed that there are a two major groups to film:
-People who hate the original and call it "college kid bulls**t"
-People who love the original and annoyingly quote the film, usually when drunk, and have a tendency to wear out the film's appeal
I've also found there is one other group.
-People who liked it, and leave it at that.
I fall under the third group. As for the trailer, well, it's your average trailer that compiles enough of the film to make it look entertaining. In other words, it looks like it could go either way.
I'll probably see it, though probably not in theaters.