I just realised there hasn't been much in terms of Den-O from TOEI lately.

[lazycoconut]

But who knows, maybe sometime in the future, just for once, they'll have kid Ryotaro act as Ryotaro, just to showcase Ryotaro henshin again for just one more time.

That would be a straight-up recast though and Toei doesn't usually ever do that. The only way to have Ryotaro appear out of suit now would be to take him from another point in his timeline and cast him as an older guy