• Replace red and green dots in leftmost column with either a checkmark (sim is up to date) or a "reload" icon (sim needs refreshing). Clicking the Reload icon should run the sim.
• Add new second column tentatively titled "Results" (name subject to change). This column shows the number of warnings encountered, or else a checkmark (also subject to change) if there are none.
• Move simulation settings into a new leftmost tab in the Plot/Export dialog, to be renamed "Sim Details" or somesuch. Adjust buttons on top to match.
• Display the tooltip with all warnings when hovering anywhere on the associated row in the table.

Further details provided below.