Oh I see, the info that I did research on was calming that Kuuga was the last ishinomori rider, much like how Eiji Tsuburaya had Return Of Ultraman drafted. I have no idea where so sketches came from and I kinda wish these designs would be reused in some way for future riders. I dig the female rider look.

The guy still loves his role as Bravo so just like pretty much the whole Kamen Rider Blade cast I would be surprised if he didnt know about it.

Considering Metal Yoshida constantly retweets meme stuff and screenshots... he should have noticed it ;)
Same for the Blade guys, of course.

Is the guy that sings "Surprise Drive" from KR Drive the same guy that played KR Eternal in W?

Yup. Mitsuru Matsuoka.

Thought he looked familiar. Also, he has high singing voice.

Funnily enough, he only sings that high for recordings. His voice sounds much deeper when he performs live.

Really? I knew his voice was deep when he talked.

Yeah, it's weird. When he performs Surprise Drive Live, he sings it like an octave lower.

Here's a direct comparison, as the first line of W is the recording and he then continues live. (I think he sounds so much better in his live performances- hope I can see him when I'm in Japan!)
https://www.youtube.com/watch?v=xfICd0u01g4