I care.
In THX you can see the seeds of everything that was to come. The obsession with sleek vehicles and speed. A character rebelling against a mostly faceless ruling body. Making the most of a small budget, and using real locations to give a sense of realism to the whole thing. And the wonderfully detailed soundtrack, even in mono.
Now, it's become an improbable series of vast pretty underground cityscapes instead of a claustrophobic dystopia. And everything's better with CGI monkeys on your back! ;)
If pretending nothing has been changed is Lucas' new mantra, it bodes ill for those three movies we like...
This is the only info I've ever found about the Director's Cut. Click "our work" then "features"...