I meant tha it's easier to just reveal the opponent's base once than trying to micromanage limpets around, but if fog of war hides your revealing then that makes Limpets better. No use in seeing what you've already discovered, unless fog of war is on.
On second thought, do Limpets allow you to reveal any stealth stuff? E.g. what if a Nod Harvester goes into a stealthed base?