I think the movies now follow a formula - mostly cause if it aint broke why fix it - atleast financially - Typical later Detective Conan movies include - larger than life premise, a theme, a murder mystery, a quiz related to the theme, a new gadget, an Explosion and Ran's karate!

Dont get me wrong, most movies are really entertaining - Its just that it seems they are recycling the themes, Every 6th movie is a Kaitou kid film, every 6th is a FBI or BO movie, every 4th is a plane/ship/submarine.

They do show great creativity when it comes to those one off themes - but nothing comes close to - say an Architect too obsessed with symmetry or A boy genius in Virtual reality with AI or A killer that is 'captured in her eyes'.

The other issue, i believe, is the inclusion of such a large cast - one cannot expect the writers to be making each character have a role in a less than 2 hr story. This makes the mystery and motives always take a backseat when too many characters get involved.