[stonith]

> Which begs the question why save games couldn’t do this

Replays weren't added until 1.08[1] so it may have changed sometime post launch, but I'd have thought because it means you have to run the sim to get to the eg. 30 minute mark where the save is, and even on modern machines running remastered that takes quite a while. A more constrained machine from the times wouldn't be able to do the x16 speed fast forward used today.

[1] https://liquipedia.net/starcraft/Patch_1.08