I’m familiar with some of the (unpublicized) opinions of some members of the committee, and they seriously doubt that the Miramar plan will go through.
I don’t think the voters will be given a chance to decide on Miramar. Whether they’ll be given a chance to decide between some other options, I don’t know.
The area directly east of the current location of the airport at Miramar is an extension of Miramar MCAS; there are no homes there, and there won’t be for the forseeable future. There are homes north and south of the area directly east of Miramar. The closest ones to the flight path of arrivals would be the southernmost parts of Scripps Ranch. But the civilian runways would be south of the military runways, moving their arrival corridor even further south. So the civilian airliners would be further away in addition to being quieter airplanes.
The areas of UTC and La Jolla Shores, and, to a lesser extent, Clairemont Mesa, would be much more affected than the areas east of the airport. These areas listen to extremely loud F-18s on a regular basis. Also, those F-18s overfly those areas at 2,000 feet right now. If Miramar became a joint-use airport, flight paths would be changed, and both the military and civilian airplanes would climb to higher altitudes over these areas, reducing thier noise.
There’d still be more noise there than there is now, but not by as much as most people think.