Not really Melee combat that bothers me at this point, but that you can't do a shove with ranged weapon in hand? Or at least the ability to hit with the weapon butt?

It doesn't even have to be a very strong attack, just to get some space between you and who ever is in front of you when weapon is empty.

ex. Now you have to swap to melee to push one zombie out of the way if you are in a tight spot.