I do the same on level 1, I scout for weapons, armor (tho dont need armor no more as a level 6 Beserker) . Doesnt worry me if the group splits up. But on suicidal, unless you are a medic or beserker, I've seen Bloats screw alot of people up. They get latched on by a clot or two, then chucked up on and then become brown bread.
During the waves, really nothing you can do if a player go rambo to get all the kills. I admit I been ramboing this past weekend.... just to keep my team alive!! These new players die faster than lewie the fly. I try telling them to buy armor, even give them money to do so and they just stand there and do nothing. Ima all good for the new players, I just wish they would listen and take advice. They dont seem to learn how the gorefests are eating the up.
But I been trying to help the new guys out. Playing my beserker last night, I was handing out monies for people to get the AA12