Mine nodes are low effort work and here's why
https://youtu.be/A2wNBRz0NnEFirst, galvatron fails to destroy pigs due to the misplacement of stalagmites.https://drive.google.com/open?id=0B3UEvfmMgeaWV1FlelhzeW94bnFfSVVKQkx1ZlBkcUNtNU1FSentinel prime fails to hit the target due to the cave pillar placement. These are few of the annoying things. Razir also posted about the blocks appearing in the bots face and I believe it does damage too.