Apparently set leaks that Shotaro or Skull is going to appear as it shows a man in white wearing that white fedora. Most likely Shotaro.

aaaaaaaaAAAAAAAAAAAAAAAAAA, don't get me excited. If they pull out Shotaro then fucking yeeees.

I'm not a very huge W fan, but if you bring me Shotaro, best part of W, there is nothing i can say.

Next bring me Yamamoto Shoma and/or Takeda Kouhei for Kiva arc and the alumnis return will finish in a blaze of glory.

But... The Kiva arc already happened

oh yeah... my bad.
The thing was so mixed with Ginga and this Sougo love plot that i completely forgot it.
Dammit what a farce...

Bring back someone from Kuuga and we'll be complete.

Someone that's not Riku's corpse, anyway

I think the arc showed Inoue just doesn't care about Kiva, even though he was its writer. They got Yuri's actress and yet she didn't even play her. Jiro appeared in a few scenes, but might as well have been a new character since he basically didn't talk about Kiva, aside from the weird line about being a servant of the Kiva clan (rather than mentioning Otoya specifically).

With or without Ginga, it feels like it wouldn't have connections to Kiva as long as Inoue was the writer.

I don't quite agree. That arc really made me feel like I was watching Kiva again, what with it's baffling attempt at a love story and a power-up that comes in out of nowhere.

It made me feel like I was watching Kiva again, what with none of the characters being likeable

Well, Riku's actor (Kenji Tominaga) actually are suit actor for Kuuga. He also have other role as unnamed businessman (Kamen Rider Abyss) in Rider Time Ryuki.

I think it wil be really interesting if Riku are revived and he will portrayed again by Kenji Tominaga.