The Soviet Shuttle Replacement

[Tarmunora]

Hm. I think that the problem wasn't so much that it was free, but rather, the safety of doing evil chem/botany stuff in an offstation secluded area where you are unlikely to be interrupted.
Adding a TC cost to get to a super-duper safe spot would... almost be worse, in that now you have a spot where the antag is sitting in a nerdhole, with 0 possible interaction with the rest of the crew, until they stroll out with a deadly hellmix they spent the last 30 minutes making.