A key combo would also work great, I didn't even think about that.

When exiting and restarting manually usually steam take a moment before you can launch the game again where as when the game restarts on its own it usually doesn't have that delay. I thought it'd be a nice feature to have, but it seems like it's an unpopular idea.

As for the mod suggestion, from ...

It would restart the game without needing to make any changes to the mod list. So when developing mods you'd have a quick way to restart after making changes to your mod. Without needing to enable/disable any other mods. It'd be useful for mod developers and most if not all the functionality is ...

It would great if there was a "Restart" button in the mods menu, so when making changes / developing mods, you can quickly restart the game and see the changes. Right now I current made a mod that I load that errors out when it's enabled so I can enable it cause a restart and then disable it again ...