Hey Seifir,
Thanks so much for your suggestions. The rescued characters can actually each be placed as towers now. I do think it can be interesting to see the survivors walking around camp and stuff. The dog and hunger are both ideas I've played around with, there was a survivor idea which was an old man with a dog that would attack automatically. The hunger originally added an extra meter which made the game more complicated as it has so many moving parts already. I'll try play testing some ways to add the hunger and dog which would add to the overall game.
Your feedback is greatly appreciated,
Rafi