I'm afraid this is not reinventing email. It's more of capturing one particular use pattern. You quote pg saying it's a Todo list, which it is, but then you out

I'm afraid this is not reinventing email. It's more of capturing one particular use pattern. You quote pg saying it's a Todo list, which it is, but then you outline a solution that doesn't really work for my version of that Todo paradigm. And then you move on to irrelevant details like pixel perfection and retina support. I strongly suspect this is not what pg's RFP was about.