It would be interesting if Keiwas sister ends up as Tycoon, as she has an actual story reason to hunt for answers now that she remembers the past.

Basically, Keiwa, Neon and Michinaga became riders after the rescue in previous DGPs. So it is quite logical if she is at least recruited.

Toei Superhero Christmas stage. https://yt3.ggpht.com/DVVWIQrj2zsstj...3Q=s1024-nd-v1
Tycoon is involved, and Nago's enhanced form can also be seen.

There are many different ways to write a humble, simple-minded protagonist. Many previous main Riders would, in some way, fit that description. And even if there isn't a new Tycoon, I feel like any hypothetical new protagonist/second Rider that gets introduced after Keiwa is going to have to fill the role of being the more down-to-earth foil to Ace's sly and mysterious manipulator. I honestly can't imagine Ace working as a protagonist by himself without that.

I wonder if the Boost Buckle has an ideal user aside from Geats (maybe?).

Solid debut for Tycoon Shinobi with some great scenes for Keiwa, even revealing that his family was involved in the Desire Grand Prix after all. I wonder if Sara is going to become a Rider at some point, since I feel like they're setting us up for that.

Now I'm really curious on who's going to win this DGP, since Tycoon retired, which leads me to think if Naago wins, her true love would probably be like everyone in the world for her, Buffa, the DGP would be reset(?), or Geats, who could go any which way. I'm probably absolutely wrong, like I am about many things, but that's sort of the impression I'm getting at.

Anyway...

Next Episode: "Suffering Sucatache! He's a Mon-star!"

It seems to me that there is nothing complicated in this. They will reveal Ace more or, if they still want to keep his mystery, they will use Neon and Michinaga. Still, the Geats are not an analogue of Kabuto or Decade and do not appear in the final to pathetically save the day. DGP will help him open up.