Yeah, I really wish scarves were used more. That said, they should be used sparingly -- W and Mach being some of the only ones that have them let them stand out; and that should be true of anyone with a scarf who follows.

True, and those actually worked well so no problem there.
But like Kurona said, as long as they do it sparingly and only use it when it is needed that is fine.

No offense, but you guys never ask how would be the plot.

We know next to nothing. The name isn't much of a clue and people have already theorised basically anything that logically follows.

It would be nice if this Rider had some design throwbacks - scarf, antenna, compound eyes. No one component is that rare but putting them all together, maybe an outright grasshopper theme, would be cool.

Well if you really want it, I cooked up the idea of Zero-One being the grandson of Ichigo. Plot goes that Ichigo went on to have children of his own but due to his duties as Kamen Rider he was forced to leave them in order to keep them out of danger. The children eventually grew up to be parents themselves and one day, Hongo's grandson becomes a Kamen Rider for whatever reason and finally meets his grandpa for the first time.

The theme of the show would be the hardships of becoming a Rider, kinda like in Gaim with the horrifying effects of teenagers getting Rider powers and eventually had to save the world.

It's fan fiction, but hey, what would fan fiction be without having fun?

Why would we ask? You already told us about it earlier in this thread:

Wasn't Fourze originally supposed to be Ichigo's grandson?

I wish could be a blend between Showa and Heisei eras.

Here's an interesting rumor that popped up. There's going to be 2 main Riders, Zero and One respectively. Sentai and Ultraman both kind of did this so maybe KR is chasing the trend

If Ichigo had kids, who's the mom? Of course, they could be adopted.