Right, again sorry if there is already a post, but I again can't find it.
In the County of Lincolnshire, UK, Lincolnshire Fire and Rescue Service operate 38 fire stations across the county. When appliances are called for say an extended period of time, which is typically around two hours or more, other appliances will go and cover their grounds IF they are otherwise not covered by any other appliance. For instance, Caistor Fire Station will often have their appliance at Gainsborough Fire Station covering Gainsborough's grounds while they are out, and when they get back, Caistor leave and return to their own station. I would like to see a feature like this, along side a retained crewing system, where the number of people "on call" for an appliance varies and can change every so often when the player is online. That is in the next paragraph for more details. The feature in summary, is fire station A can have their appliance moved to fire station B until B are back, if the player does not do this themself, it will be done automatically after say 5 mins so you can't have more than the correct amount of appliances at the station with the expansions.
The Retained Crewing system would include an automatically varying amount of people who are on call for an appliance, with an automatic delay for them to get to the station and get ready. They would then respond like any other appliance. You would dispatch the appliance like normal, but there is an automatic delay for the crew to arrive on station. The crew responds like any other. If I am forgetting something, I will likely add it in a response to the post!
Thanks for reading if you read it all... that's a lot...