It would be great to have some sort of identifier to indicate that a simulation has changed since the last run.
I usually end up re-running more simulations than I need to, just because I can’t remember which ones I’ve changed.
To avoid this I’ve started putting an asterisk at the end of the simulation name when I make a change. This way, at the end of a project, I can rerun all simulations that need updating. This kind of works but it’s prone to error and could be done automatically.