Lucas is a good director and writer as long as he doesn't write the romantic dialogues between Spock or Uhura, we should be fine.
Lucas is primarily a producer who started out as an editor. He has surprisingly little experience as a feature film director -- THX-1138, American Grafitti
, and four Star Wars
films, a mere six movies in a 48-year career, plus a variety of shorts and documentaries early in his career. Every other major film he's been involved with has been directed by someone else. As a director, his skills are primarily visual and tonal; he has very little proclivity for writing dialogue or directing performances. Most of his writing credits are story credits for productions that others wrote the screenplays for.
Back on topic, his statements in Trek Nation
are not really big news, since the documentary came out two years ago. I'm surprised it took this long to get onto DVD. But it was gracious of Lucas to acknowledge the importance of Star Trek
to his own work. There would've been no Wars
paving the way.