Ask HN: is there a Kickstarter platform for existing product development?

New product features can be a terrible pain point. They always come from your current customers, submitted via email, phone or social channels. They need to be curated, often by more than one person in support or product management, and then dumped into a central repository. After that, the product team has to go in and prioritize features based on criteria that links back to ROI: 1) how many of our existing paying customers will continue to pay us because of this feature, 2) how many new customers could we acquire if we included this feature, 3) how much time and effort does it cost to implement this feature

Why hasn't anyone built a Kickstarter tool that essentially funds new features based on customer demand? In essence, a secure web portal that uses the Kickstarter model to crowd-fund new features.

This solves the problem discussed in the old adage: "Always ask the customer if they are willing to pay for it [new features] when considering before developing them."