Kickstarter are leaving money on the table, not just for them, but for the artists they host as well and that's a pity.

That's exactly my point. I have been working on a tech project that is currently slated to go on KS. I find myself wondering if a site like indiegogo might be a better idea. KS does not help with discovery. I don't have a huge network. I woild prefer a service that actively informs it's userbase of relevant projects based on their profile. This would have a multiplicative effect on gathering supporters. I, too, have experienced coming upon a KS project of great interest to me only to learn time had run out. Multiply this by thousands of people and you have a situation that is far less than ideal for project originators and backers alike.