useless units?.. lmao all units have their uses..
JJ's are useful for killing infantry with no repercussions if infantry is the bulk of enemy forces also light vehicles.. plus they are useful for harvy harassment. Also Ive used mass amounts also to take down banshees IT IS POSSIBLE NO JOKE.
Also pavement is used not only to block subterrain units but also to prevent terrain deformation due to ion cannons..multi missiles...artillery.. etc..
Limpet mines are super useful early in the game to do 2 things.. find enemies bases and slow down resource gathering.. they also add weight to them causing them to crack/break ice.
Wolverines are great scouts but also excellent anti infantry and great for harassing harvys