[giovannibajo1]

If you go down this road, just let project creators decide their milestones and timing, and then release the funds. Different projects have different cash flow problems, so each creator should be able to decide.

Want all money upfront? Fine, but people will know and decide accordingly whether to back your project.

[k-mcgrady]

The problem here is what to do if you estimate the milestones wrong. People backed it under those terms and you supposedly can't change the terms after they give you money.

What if your initial expenses are higher than thought but you can't access your next milestone for 4 weeks meaning you miss important deadlines with suppliers/manufacturers and the company goes bust, just because you couldn't access the money people pledged in time.