If Wasabi allowed users to save coordinator addresses they'd be able to select one from the list instead of manual inputs but redesigning the coordinator input section mods to achieve it aren't necessary. It's going to require restarting the wallet so doesn't matter.
Are Wasabi devs discussing a possibility of configuring multiple coordinators ?
Switching coordinators requires starting the app. You can do it manually, but redesigning the client to support automatic switching isn't practical.