1. Because they probably ran out of budget. They couldnt even make real Drive Shoes for Gold Drive anymore. They just used Slippers that had a sticker on them to look like the Drive Shoes.

2. Subjective perception on your side. I got nothing 555-esque from Drive.

Cost reasons probably. Making a completely new suit for such a brief moment in the second to last episode isn’t worth it.

I do agree however that the form is beyond lazy. Even for its short time on screen. These kitbashs can look pretty good, like Yomotsuheguri for example, if they actually put some effort into it and repaint it properly.

Would the form be colored properly, together with some added paint details and maybe a new color for the visor this form could've looked pretty cool.

Since you’re the first one to make that comparison and since we can't possibly know how a yet unaired show will feel like for you specifically I’d say no :p

I think what happened here was that they couldnt repaint it because it was the only Mach Suit available. They usually have two suits per Rider, one for close ups and one for the stunt scenes. So what I took from it is that one of those suits (most likely the stunt suit) got damaged during filming. So they couldnt repaint it since they needed a white Mach suit for other shoots. Like the upcoming corssover. Since making another one they could use for that was probably not in their budget.

I never noticed that. That's kind of pathetic that they had put stickers on slippers for Gold Drive. I thought that since the Gold Drive suit was a repaint of Protodrive, it had the real shoes.

Yup its hard to see but there are scenes where its noticeable.

https://pbs.twimg.com/media/CMlrgKkVEAE8HjO.png:large

The fact that they had no spare suits is probably also the reason that the MP Machs never went anywhere...

I'll be honest: I completely forgot about those. They totally missed the opportunity for the SPU to Henshin and go into the final fight together. Buh!

That was probably my biggest disappointment about the finale of Drive. The MP suits were wasted.

What happened to Shinnosuke and kriko in the future of their life?

They got old, and, at some point, probably died. That is as specific as it's going to get...for now anyway.