Change icon size in unity's application switcher (alt-tab)?

When I switch applications with alt-tab under Unity (full version, not the 2d one), my open applications are displayed, represented by their respective icon. These icons are quite huge... everytime I hit alt-tab I'm a bit surprised by the thing that pops in my screen. I'd prefer a much smaller icon size.. is there a way to change this somewhere?

They seem to be ~96x96, I'd aim for 48x48 :)

I don't think that's possible. However, you can install compiz-settings-manager and attempt to use another application switcher -- there are three or so options available. However, I did not see any that would allow small icons.