It's feasible and already thinking about Quora plugin. Yack has an open source plugin architecture. Each community in the app, Hacker News, YouTube, Reddit are a plugin. Once out of beta, users will be able to install custom plugins directly from a GitHub url.
Godspeed. As far as I've been able to tell Quora is actively hostile to anyone trying to improve the experience of using their site. Drives me bonkers.
