I know we have the EMS Extension but for those who have EMS Buildings they don't really want or need for the purpose of relocation or whatever reasons there should be the option of combining an EMS Building to an already active Fire Station.
And before anyone says this can be exploited think about this, If a player has who worked on an EMS Building of 4 bays with credits or coins and they combine it with a Fire Station of 4 bays It's already been worked on with calls or payment so no cheating was done for extra room.
Idk if this can be possible to do but if it is maybe it would be 3 days to a weeks waiting time as well so it's like waiting for the extension. And during the process both stations & units occupied couldn't be used unless you pay coins to finish the process early so the newer building can be used again.