Coppola's wine not paying the bills? I really don't understand why he would show interest in games out of the blue like this.
Beats me. There was a talk from Coppola within the last year or so at the AFI (I think) about how he's doing a lot of experimental stuff these days, so this could be a part of that. American Zoetrope is controlled by his kids now, though. They could be the ones pushing for it. We all know Coppola will do basically anything to help family.
If you cannot keep your scope small enough that you can't put together (at the very least) some footage of gameplay prototypes, you are probably already setting yourself up for failure.
A prototype video is going up next week, so you got your wish regardless.
But it still doesn't change the fact that in many cases developers cannot financially or logistically put together a prototype for a Kickstarter. Passion projects where the developers are making the prototype after hours are the fringe cases, and not the rule. Developers don't always have the time, money, or resources to sink into a prototype for a Kickstarter that may not even get funded.
Judging by how people on this very forum have acted with clearly work-in-progress and prototype materials (see the litany of shitty comments in Bloodstained and Shenmue III threads), it's usually better to sell a Kickstarter on a promise than in-development work anyway, because it's clear that a lot of consumers can't actually handle a semi-open development process.
I've backed nearly ten Kickstarters over the last few years, and I don't think a single one launched with prototype gameplay attached. All those games (bar the one still due for release in the next year or two) have released and turned out mostly "as advertised".
I'd probably say the biggest diversion from what was promised was Double Fine Adventure, but that's more or less how I see "old school point and click" compared to the more streamlined experience we got in the end.