Split screen coop is essential! RFoM has been the game of choice for the past couple of weeks at our Tuesday Fun-Nights, and though only 2 player with three of us guys playing, we share the controller and enjoy watching and offering supportive advice when we're on the back seat. I was asked last night after announcing 8 player coop in RFoM2 if 4 player would feature. I don't suppose it will, which is a crying shame! It's a great feature for some people and has done very well for some titles like Hired Guns and Halo. Dumb down the visuals if you have to but include four-player split-screen as the very best coop team experience you can get with the team-members in the same room.
Regards the gameplay, I am impressed by RFoM. They have got variety in the weapons, mostly through the second fire mode, that makes them actually worth swapping between for different jobs. Weapon selection is a bit dodgy and in the heat of the moment it's easy to overshoot a weapon and pick the wrong one, and controlling some of them is difficult without any chance to practice, but overall they've worked excellently to add a tactical element especially with coop and players running different roles.
I've played GeOW to completion in coop, and H3 to completion or close, I don't recall, and we're about 3/4 of the way through RFoM. RFoM is definitely the ugliest of the three, and the visuals are drab, but gameplay wise it's an FPS I actually enjoy and would care to buy. The grenades work naturally; you have all the weapons on hand rather than being restricted to a choice of a couple at any time; they have different functions that make a real difference rather than just being shooters with different graphics; the levels are varied enough to call into action the different weapons; AI's pretty good with monsters sneaking around, avoiding grenades etc. and not dumbly going where you want and laid all your stickybombs!, although ally AI is laughable with grunts standing in your way just as you shoot a rocket... They need to add the option to push them off the building! All in all I'm looking forward to the sequel, which is the first time I've ever been excited for an FPS, so big kudos to Insomniac. Although hopefully for RFoM2 they'll actually bother to spend 5 minutes on Google Maps to avoid laughable faux pas like placing entire cities in the wrong place...