While I love the looks of the texture I have to agree with the others.
It doesn't look at all like what you would industrial concrete expect to look like.

On top of that, I personally prefer a hard border between hazard and non hazard concrete. It enables me to clearly mark hazard areas. :)
Like ...

I am over 0.9 in my current world. :)
And yes, I've encountered the problem you mention here. All I had to do however was to slightly re-route my power lines, away from trouble or through generally "save countryside" between my bases. (After a while you will know which direction most attacks come ...

I regularly build far out outposts.

However, I don't just build them to bring in resources, I also build them to bring in energy. (solar power requires a lot of space)

I usually run power lines alongside every train track. That means any outpost is immediately supplied with power to get it up and ...