As an example, look at the following class definition:

using System.Collections.Generic;
public class C
{
    public object Prop { get; set; }
    public IEnumerable<int> PropWithEnumerable { get; set; }
}

When typing foreach (var x in c.|cursor here|, we should preselect the PropWithEnumerable. We can do this for variable assignment (ie IEnumerable<int> x = c.|cursor here|), so this should be just extending the case to foreach enumerations. As an added bonus it would be great if it was smart about an explicitly typed enumerator variable, so if I had an IEnumerable<int> and an IEnumerable<string> property and had explicitly specified the foreach variable to be a string it would select the correct property.