Yeah close combat I guess needs to be more of a sneaky ambush than a classic charge across an open field, sure it will still happen if you can manage to sneak close enough but overall its not going to be as effective.
But then it just becomes an exercise in dice rolling to work out who brought the biggest guns...
Not so, this is where the tactics of hiding in cover come in. Lots of cover and fire lines makes the tactics of trying to flank people to shoot them from an angle that they are exposed. I guess this really works best with quite small scale stuff, a few units on either side would work better than a couple hundred models.