So with the new platform coming out soon and the high likelyhood of zombies continuing over to it, what I would like to see is a newer pause feature, on solo,that will allow you to actually save your game at the beginning of a round. But it would have to be once per round as to not keep back stepping to complete it. The save is so that you can leave the lobby, shut off the console or just to start up a co-op game and play with friends while still having that other solo ready to go when you want. I like solo, it has a different style gameplay( bein that you set the pace, total control) but man it gets boring fast. This could also potentially curb the problem with going to a paused game deep into the rounds to find that it had been kicked due to an update or the like.