Devs also have plans to stop players being able to build too close to biter bases. Something similar to the creep in StarCraft.
That will be a great addition to the game, I guess the main game has turrets that will be able to hit the things that create that kind of creep, as you said, similar to ...

I played the demo and I will buy the game as soon as I can.
There is a balance issue with leapfrog strategy:
You can easily enter good positions with turrets and transport belts moving ammo around the map, because you take aggro from the aliens, you can set lines of turrets, move forward building ...