define WP_CACHE getting erased by iThemes

We’ve noticed an issue with the placement of the define(‘WP_CACHE’) in wp-config.
iThemes has a starting and ending comment that they put their configuration definitions in and often times the WP_CACHE define gets caught up in there and erased – I’m guessing because this plugin looks for the first instance of define() and puts it on the line before. That’s what it looks like anyway. Can the code be modified to have set starting and ending comments too so it doesn’t get erased by other plugins that also touch the wp-config file.