Yeah, most of the missions are pretty standard stuff. Innovative gameplay hasn't ever really been the hallmark of GTA games, aside from the GTA and GTAIII, since they were sort of the first of their kind, or at least the first ones to do it as good as they did. But they still turn out really fun. Some of the missions in GTA4 were very fun and at the same time very monotonous if you think about it. Thinking about my favourite ones, they're nearly all "Go into this building, kill everyone on your way out" type missions, but I still love 'em.