On the 'Vet/Balance' maps, the useless units such as cyborg, medic, wolverine, stealth tank, pavement, laser fence, obelisk, upgrade center, are all a bit less useless and bit more usable in competitive games. https://github.com/HumbleTS/Balance-Veteran-Patch/wiki/Balance-Veteran-Summary
Outside of those maps (on vanilla) they are all complete trash 99% of situations.