I always felt kind of uncomfortable about a film where the whole joke is that Americans (I'm an american myself) are going to assassinate the leader of another country (no matter how tyrannical that leader may be). I mean imagine if North Korea was releasing a film where silly North Korean comedians were sent on a mission to murder Obama? I'm all for freedom of speech, but this movie always felt a little off to me.
I dunno, I'm OK with comedies dealing with otherwise very serious political issues. I mean, Dr. Strangelove is about nuclear war which was a very real fear for people at the time.
Also, I would watch your hypothetical film with silly North Korean equivalents of Seth Rogen and James Franco.
I too would watch this North Korean film.
Also, however you may feel about the "serious political nature" of the film, I highly doubt we'd threaten a fucking terrorist attack against NK if they made a comedy about killing Obama.