I would love to see a framework developed - like Lean/Agile Startups - that specifically deal with a scientific process for startups across all/most verticals.

Just like I can use the principles of Agile Software Development to build my product, I would love something similar for marketing.

I know there are many theories - AARRR from Dave McClure is one that jumps to mind, along with the long-tail of SEO landing pages like BCC & Patio11....but there isn't a coherent, or rather I don't know of one, framework that pulls it altogether.

Anyone care to take a stab at this?

I am sure many founders would find this immensely useful.