I use Vantage and it's definitely a good product and all but the real value is every hour you don't have to spend using AWS directly.
I would pay _so_ much money to never have to use Cloudwatch and AWS Cost Management again. Thankfully, I qualify for the vantage free tier for quite a while longer.
I caution against trying to monetize it; Facebook will waste your time with constant cat and mouse changes to the HTML and will bully you with their vast legal resources
Not exactly what you're looking for, but there's a OSS Chrome Extension that allows you to record your actions in browser and transcribes them into Nightmare.js code:
I built something similar to this last year and wow this is just much... better
I find the choice of Flask + Zappa a little weird - I much prefer serverless.com for infra as code - but it makes sense after staring at it long enough
Establishing a (standard sized) ESOP is good for the company long term.
If you would like better/different terms, you'll need at least one other firm to offer you a term sheet as leverage.