[Plugin: theme-selector] Great plugin and a request

Thanks for the great plugin folks!
I spent a good number of hours testing out all theme-switcher I could find and almost gave up right before finding yours, which is way better than anything I was hoping to find. Thanks!
My feature request is this. I have 60+ themes available to users on a WPMU network and your plugin is an excellent way for our bloggers to easily switch between themes, however every time someone activates a theme, the entire list of 60 theme thumbnails reloads – before allowing the website proper to reload. This in turn makes the whole activating a new theme process seem to hang for about 20 seconds while the theme thumbnails load and nothing shows up to the right. My optimal scenario is that the thumbs would not need to reload at all on theme switch, however if that is too complex, an easy solution would be to simply to force the site proper to load first, followed by loading the thumbnails.
Thanks again!
Jackson

http://ww.wp.xz.cn/extend/plugins/theme-selector/