Standard Cyborgs at Round Start

[Spy_Guy]

The primary purpose of Light Cyborgs is actually, I think, to nerf people who round-start as Borgs hoping to become rogue and be robust. It obviously isn't for saving material because that's never a problem for Roboticists.

Also as someone who plays round-start Borg a lot I prefer the light frame, it looks cooler and is faster.

Agreed.
As someone who also plays round-start borg I find the light frame sturdy enough to get into shenanigans with and also prefer not being painfully slow like the standard borg.
Plus, if a borg doesn't like its scrawny frame, then that's just more to do for the roboticists who tend to be pretty starved for work otherwise.