Hey Rus,
The Girlscout is super fast and ranged so i think it helps to balance her a little. The chainlink is supposed to be weaker than the steel plates. They're kind of like the walls of Alexandria in the walking dead. The new update has a completely new Car system and a new 3rd person car camera you can toggle with L3 or Command. I kinda feel the towers are a bit over powered at the moment and a faster rate will just mow down everything. I'll try and see what I can do about that, maybe just a slight increase. All of those guns and more will be available soon through paid DLC or with in-game bones.
Thanks for your patience, feedback and support, Hopefully you enjoy the new update. its a drastic next step.
Rafi