Add me to the list of folks who'd like a re-openable splash page. I'm not using the Enhanced Splash widget at the moment, but I have been unable to get a modified Splash widget to come back up with non-empty content. I've added a few UI controls to the modified Splash widget (to direct the user to the desired area of the app).
That said, I'm certain my problem has to do with being a Flex/ActionScript noob. My static properties are not acting static (like I would have expected from the Java world) and content seems to be getting blanked out in the attempt to re-open the Splash page (or in closing the initial one).