It may already exist, but could a simple mod be developed such that more than one kind of police station be plopped at random when placing the station in game? Just having the same-old police station, hospital, fire station, etc. put down every time in every city seems uninteresting. Also, plopping from a list of buildings available means you can guide the look and feel of an area. What about a mod that has a list of civics and other plops possible, all somewhat similar but differing in over all building type or style, and just puts down at random a specific one?
Good idea, Bad idea, already done?
I think it's a great idea, and I'm not aware of it being done. I am slowly going through and replacing all my maxis civics, but this would be much better. Hmm, I await for further response as well...
The only way I can think of to do this would be to make a building family. In that case the lot would be the same each time but have a different building. It might be complicated to make it look right, as the buildings would be of all different shapes/sizes. I don't think its possible to make lots plop randomly.
You could always choose one of the custom lots to suit the area you're placing it in - why let a randomizer choose your destiny? :D