A Kickstater Game

...but could the lesson from the examples you set out not also be that if the goal was 250 backers they would have found success out of the blocks?
Not only that but there is nothing that would keep a successful game with a goal for 250 from reaching 1000+ backers. If that game was designed such that some pretty fun stretch goals follow that 250, all the better.
Also if you bring a game with only 250 backers to completion, you will have the good will of 250 people and a track record as a Kickstarter winner, neither of those are easy to come by or anything to sneeze at.
I guess it seems to me that if you define success as becoming "The Beatles" you might end up in the unfortunate position where you would mistake ending up as "The Yardbirds" as a failure. (Clapton, Page and Beck seem to have done alright for themselves coming out of it anyway.)

$.02

I've never once watched a KS video for a tabletop game. Are they in the business of video production? No, nor do I need a virtual sales rep. I mostly look at the grammar in the listing. If they can't string together clean, concise sentences then the product is bound to be rife with problems. I have also passed up on a lot of KS projects because I see geek enthusiasm but no evidence of business savvy.

I also prefer sustainable business plans over one shot wonders. For example, I was thrilled to back Reaper's initial Bones offering, as it funded moving their production facility from China to the States and grew their market share -- not to mention twenty cent miniatures for me. I hate pie charts that show zero percent of the money set aside for profit and growth, because that either means that they are inflating their production estimates or that they are creating a game with zero plans for support, expansion, or community. There's no real business plan, just a myopic mission statement. I truly wish that I'd had enough money to back Soda Pop's last SDE game, because I trust the manufacturer to craft a solid product that will receive further expansions, and I am thrilled with their generous customer support (my daughter lost our dice for the original SDE game, and they shipped us out a free replacement set).

Of course, if you want to satisfy most backers, just have a good shtick and amazing artwork with excellent graphic presentation . . . or involve an Internet celebrity. Personally, I'd love to see an Oglaf RPG.

I think the lesson learned from your examples is, don't do yet another Cthulhu game. At this point, I want to run a KS to build a time machine so that I can go back and kill HP Lovecraft and William Seabrook and prevent this supersaturation of what used to be two of my favorite genres. Then again, I'd probably return home to find Biff waxing my car and dozens of movies and board games about haunted Nazi tanks or a horror pantheon based on Stephen King's The Mangler.