Personally speculating that Shiro doesn't even make it past the first episode, since he's not on the poster like the other seven. Takahashi pulling a Transformers Prime and killing someone day 1 to establish the stakes

Agreed. With this kind of Setup, We the audience need to see an example of the Stakes the series is aiming for. Otherwise we have another Wizard.

Yea, but it's gonna make me real upset, because we're getting Nossan as a Rider, and knowing that he's most definitely doomed is making me sad. Hell, even his character bio sounds like he's already doomed.

Ginpen feels like he might be a Kitaoka type.

Oh no, not Zolda again...

That mean die from the disease?

What is up with Toei releasing a new Kamen Rider show on the day before Labor Day?

Rider shows usually debut the first Sunday of September. According to Wikipedia, US Labor Day(which I assume is the one you're referring to) is the first Monday of September, which almost always is the day after the first Sunday.

So it's just a coincidence stemming from first Sunday/Monday.

Also Labor Day is an American holiday, so I can't imagine has any effect on a Japanese series by a Japanese company airing in Japan

bad quality scan but some official names spelling :

Da.paan
Na~go
Mary
Buffa
+ you can see Magnum Buffa on Da.paan scan