[Kurona]

For the Showa Riders actually, I'm starting to have a crackpot theory that they might be trying to match their shows' anniversaries for releases?

It makes enough sense. 50th #1 released last year, 50th #2 is happening this year (near enough to Ichimonji's run), and then next April we'll have V3's 50th; follow that with Riderman later in the year; X shortly after and then both X and Amazon are so short that a 50th re-issue of Amazon and Stronger wouldn't have long waits between each other either. It also means Bandai gets to space out their retail releases