Almost across the board, it's an improvement for the Vespid. However, its a pain to get a full formation of them because its a 2 star base unit, and as a DPS unit you want it at full stacks. Also, it's not really significantly better than stuff like Jaegers and Strikers. They're not useless, but there are just much better SF units to spend effort and slot points on.

You'd think something that shits out bombs would be an offensive weapon but nah, this thing just fires off and endless stream of Goliaths that move forward, and while their damage isn't bad, their main use is that some fights can be cheesed by throwing an infinite number of bodies at the enemy.

Oh, and don't try to use them to kill other Goliaths. It seems funny, but the enemy Goliath blows up the rest of your echelon when they meet.