We will have a look into adding the hostname. Our concern is that the displayed text gets to long. The admin area footer is diveded in two halves; now we are nearly using all space and we don’t want the plugin info to be displayed in two lines.
We uploaded a version with the hostname info to Subversion. It’s version 1.3.0. We will not release this versión at the moment, but you can download it from here: Version 1.3.0 and install it manually.