[NeonZ]

We could also just not get an Another Agito. Both Ex-Aid and Build had less than 20 unique monster suits, and although Ghost had more than that it was because the early Ganma weren't even full suits, often just new coats - only some of them even having unique heads.

Zi-O will have tons of Rider suits due to the ridearmor system, so it's possible it will hurt the number of monsters again. I could see them moving away from the Another Rider system after December (coinciding with the debut of the Decade form which is considered an upgrade and Heisei Generations Forever) or starting to repeat some (like an Another Build Hazard that's just a color swap of Another Build).

Edit: On the other hand, I guess at this point we don't know what transformations the Time Jackers themselves are getting. If they just become more Another Riders rather than actual Riders or Chaser/Nightrogue/Bloodstalk types I guess it's possible they'd be able to cover everything.