We don't have to wait. Fallout: New Vegas required Steam. I modded the crap out of it, and absolutely nothing bad happened when the game updated.
THE ONLY THING STEAM AFFECTS WHEN IT COMES TO MODDING IS THE FILE DIRECTORY.
THE ONLY THING STEAM AFFECTS WHEN IT COMES TO MODDING IS THE FILE DIRECTORY.
Quite right...
The only game I've ever had a problem with Steam auto-update was Vampire the Masquerade: Bloodlines - only because Troika went bust after the 1.2 update, so the community has been patching it for the past 6 years. Steam likes to revert back to the Troika 1.2 version if you let it