PraetorianWolfie: It would be nice to get the gold edition here, too.
I'm thinking more of cases like the Broken Sword remastered editions that were integrated in the package with the respective original Broken Sword titles.
And in the case of the gold edition, as far as I can tell, the improvements alone (based on the description on the Steam page) don't justify a separate release.
In the case of Broken Sword GOG started selling new versions, but included originals as a free bonus, because fans requested it.
The Last Express Gold Edition is a PC port of the version which was originally made to mobile phones and tablets, which explains it's separate release. And if you don't think that the Gold Edition is worth the few euros it costs then don't buy it, personally I think the extra stuff and new UI are nice, but you can live without that stuff if you have the original version.