It’s a shame Apple killed this Kickstarter project to build a portable charger. These kinds of innovative projects can do wonders of the ecosystem of a product like the iPhone/iPad ecosystem.
That said, I’m not sure I totally get the project’s logic. Why not just make it USB and let a user provide their own Lighting cable. On top of being a legal workaround it actually can make the product more attractive by being compatible with anything that can charge over USB. In my opinion it’s actually a superior design. I prefer USB devices over Lighting or Apple 30 pin since it’s easier to share.