If i add a site to my community list (accessible by clicking the SE icon in the top left), i usually want to be able to get to it. Right away. But with the current setup, once i click 'save' to keep it there, it disappears, as the old list is shown. I can't see the new site i put there (or removed, or reordered) until i reload the page.

Could it just do a quick recalculation of the site list when i modify it? It doesn't even need to give me my rep on it - just a simple link.