I would like to have an option whereby one can select the likelihood of getting a runway change on approach. I get them too frequently now (since the update before last - it didn't used to happen so much), and not always just one change either. Not sure why this happens, when the runways are parallel (8R, then 9L, then 8L..).
As I mentioned elsewhere, runway changes involving parallel runways are usually due to AI activity. For example, PF3 may select 27L based on wind direction and then if AI are later detected using 27R you will be issued a runway change. If this happens you can request the original runway, if you choose. You can also specify your runway preferences on the SID/STAR page, after typing the airport ICAO code. This is very useful when there are parallel runways. For example, if you want to land on 27L, designate the parallel runways as either closed (X) or take-off only (T). Then with westerly winds you will be assigned 27L for landing regardless of which runway the AI are using. (Remember that your runway preference settings affect only the runways PF3 will assign for you, and do not affect the AI.)