[ElConvoy]

After Gokaiger it would feel extremely uncomfortable to have a movie like this. Toei wants to celebrate Sentai as one big group (with the occasional fight in VS movies). Thanks to the long break between Eras Rider always had that rift between Heisei and Showa. Thats why we could have something like Decade that only celebrated a very small part of the overall franchise (for the most part).

The only break Sentai ever had in its history was between JAKQ and Battle fever J and that is only because Goranger and JAKQ were added to the franchise almost two decades later.