Yeah putting belts on the outside of your wall running away from the wall slow the biters down a good bit, and they never seem to attack the belts, because they are focused on your turrets :p
Isn't the best defence in this game a good offense? Just clear out all biter spawns within your predicted pollution area and you won't get attacked (really ever)
That is a really nice design, but every time I try to build a maze like that, once medium biters start attacking, they always seem to just attack the walls and not run through the maze. Any ideas how to fix this or why it is happening?
Whenever biters get stuck trying to walk around your buildings, they try to break their way through. The only solution to it is making a design where biters always have plenty of room for running.