Gotta agree with you and other posters who didn't like this as much as its predecessors. I recently watched all 3 pretty much back to back to back (now that I own them all on DVD) and noticed the decline from series to series to series. The first is still the best IMHO.
I do hope they get to make the rest of the books into miniseries (including Maupin's latest "Michael Tolliver Lives"), but I hope they don't continue to decrease the length (the first was 6 hrs, the second 5 hrs, the third was 3 hrs)--we deserve more time with these characters.
From what I heard there will be no more "Tales..." movies. After all it HAS been 9 years since the last one. I don't consider that a bad thing. Parts 1 and 2 were great. Well cast and very faithful to the books. Part 3 was a joke. The book was brutally edited, pointless new subplots were added and the cast just seems to be going through the motions. I remember this got plenty of negative reviews and Showtime never said a thing about doing a fourth one. If they DO have a fourth one they'll have to get a new cast. Whip Hubley who played Brian Hawkins in his 50s now!