If you loved Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai, try Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.

Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai

Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals
What they share
Both films are directed by Takayuki Shibasaki, and they both carry the playful mood tag, and they sit in Action / Adventure / Science Fiction territory. If that's the register that drew you to Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai, the second film will land in a comparable space — through a different lens.
What Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals is
You investigate strange ruins overseas. A lost set of medals calls to you. But the unearthing rips a hole in space-time. Japan now warps. A sorceress rises, eager to become king. Shibasaki presents this tokusatsu entry like a stage play, complete with scene wipes and an ensemble that makes you wonder what Kamen Rider might gain by going full JRPG.