Why not landmines? Would keep them out of harms way a bit while replacing minefields.
I like landmines and use them a lot, not just as outside defense, but i put them inside my factories as well, and I generally lace newly liberated land, or just big spaces of land, with mines, gives expansion parties a fun surprise.
So...there are landmine lovers out there. I am one of them.
Please give the bots a chance to place them without having to be on the same tile...flamethrowers and biters take out too big of a chunk of 'resource efficiency' of the mines by virtue of destroying robots.
I am aware of the mine launcher turret mod, btw. I like/prefer the bot variant though
![Razz :P](./images/smilies/icon_razz.gif)