I'm also at the intersection of HN and fantasy football, which led me to create http://app.pickemfirst.com
a browser extension to manage your fantasy teams
It will be interesting to see if many developers jump in.
My experience is that the intersection between fantasy sports fans and the tech crowd is very thin.
I have already build 4 (small) apps on CBS' platform. I will be happy to share my experience if anyone on HN is interested...
In the new webstore, it is buried behind random team-based themes (university of Texas, Philadelphia Flyers...) and non sports related extensions (geo chaching, body mass index...
https://chrome.google.com/webstore/category/ext/13-sports
Did they pick the extensions with the best looking banners ???
Is there anyway you can make your product more useful for your users if their friends join too ?
Easier said than done, I know... but this is maybe the only way to generate more sharing.
Apply at: https://www.fantasypros.com/about/careers/