It’s certainly an improvement over *‘Stitch! The Movie’*, even if *‘Lilo & Stitch 2: Stitch Has a Glitch’* remains a lackluster follow-up. The story feels unbalanced; the sections centered on Stitch and his condition are genuinely enjoyable, but those moments are stretched out to accommodate unnecessary subplots involving Nani, David, and Lilo. These additions aren't particularly engaging, although there is some g…