Life got in the way and a few months have gone by. The idea percolated in my mind all the time.
Finally, I got around to doing it. I first started building Fama to support all the newsletters. But, after talking to @manuel_frigerio I decided to narrow it down to a single newsletter and start from there.
I decided on the one that I read every day, Morning Brew. Last weekend I finished building it.
I'm using Ruby on Rails for the backend and I used carrd.com to hack together a landing page.