Hi!

Your new turrets are amazing; well, except howitzer. I would expect the experimental version to evaporate multiple nests in a medium area, or at least anything it hits directly.

The howitzer is extremely expensive - to research, build, and fire. After all the dedication to build this huge cannon, the results felt very underwhelming. Several nests damaged, few biters killed, and a huge steel and oil investment for doing so.

I don't mind the cost - it's a big gun, and it's shells should take their sweet resources. But i would expect the effect to be proportional to the high cost. Something like:
+ kills everything in a very small area of impact (~5000 damage)
+ Medium explosion in a moderate area, killing nests
+ Small explosion in a broader area, dealing some minor damage.

What do you think?

I think 1 shell = 1~3 spawner and very long range.
This mean If you invest enough time or firepower, it will guarantee the safety of the factory.

But you are right. It takes a lot of time to see the effect.
I will lower the overall price and increase the attack power of the shell.

Thank you :D