I appreciate what Guerrilla is doing in terms of killing off the gun on a stick shit, and it really is remarkable both in apparent tech and certainly style (and craftsmanship), but yeah... it looks boring to play. Maybe they just haven't shown off the exciting parts yet, but judging from what's been shown, it seems a bit like a wargame with the pacing of Rainbow Six.
On that note though, Halo 3, for all its bug ugly nastiness, is a lot of fun to play. I'll rip on the visuals, the designs, but for simple FPS action, it really doesn't get a ton more entertaining than that. I hope Insomniac is taking some notes. I liked Resistance (which, by the way, had better looking gun models than Halo 3), but it never reached that state of glorious entertainment that Bungie seems to have built all of Halo around.