Would it be possible to "swap" out an existing workspace with a pre-built one when turning back on a workspace? Similar to how a user attaches to an existing workspace during the initial create step for some preset, I'd like the ability to attach/swap out a resource when turning a workspace back on.

For example, if I have an aws_instance re-running some init script for a while everytime it turns on, I'd like to somehow import an existing one that's warmed up and replace the old aws_instance during the workspace start event.