I worked some days on that idea and, now, a first version of a script to manage such signatures is ready: ksig 1.0.
It's only a first version, i know there are some bugs but i hope for the feedback here

It's hosted on my domain but the underlying database is aligned with the usual one created by Abyss and updated by Alkis: every time Alkis will update the stats, i'll do the same with the signature db and everyone who is using the banner will see it updated automagically.
Whenever anyone wants to change it's signature, he will only repeat the creation procedure and the old one will be overwritten.
Main features:
** 3 different styles (1 discontinued because meaningless after the april KOADB change)
** text background customizable
** every kickoff2 kit design implemented
** text, edge, shirt, shorts color customizables
** text edge width customizable
** country flag selectable (lot of bugs here)
** joystick selectable
To play with it go here: http://www.lutek.it/ksig/ksig.php.