I liked Black Hole and Tron and I'm glad that the trailer for the new Tron film at least looks promising. Whenever I see a sequel or update to a show or film I liked as a kid it makes me nervous. Not only can they do a crappy job with the new film, but if it is bad enough it makes me question how good the original was in the first place.
As much as I loved Star Wars as a kid, after the first "prequel" I rewatched the original three only to find that, while good, they weren't as good as I remembered, particularly because of the often terrible dialog.
I haven't seen Tron or Black Hole in probably 20 years, the last time probably when I was 10 or 11 and I'm not sure they'd hold up well, particularly Tron.