I would support more Decade movies sooner than more Den-O movies. I still think there is a lot of things that could be explored when it comes to Decade's story.
If that's the case, Sanjo needs to write any future Decade movies. ****, that should be what happens from this point forward.
It's quite clear out of all the Heisei Kamen Rider head writers that Sanjo and Hasegawa are the only 2 competent writers that know how to write a Kamen Rider series FROM START TO FINISH.
With Yonemura, he's still struggling to figure out the damn story himself so it ain't happening. With Kobayashi, you might conclude one or two plot-holes of Decade but it'll just lead into more Den-O dribble. With Inoue, you're completely butt-fucked in that regard since he'll just created more chaos and bullshit to open up more plotholes than ever.
Hopefully they will one day reveal why he hates Decade so much. Because right now Narutaki is the most irritating villian KR ever had.
But what I'm more interested in is knowing how Tsukasa lost his driver in the first place. Because someone went to a lot of trouble to make sure that Decade never returned.