Well, there's already https://www.popvox.com/. They show bills currently in Congress, organized by category or what's most popular on the site. They also send alerts that recommend bills based on your interests, although it seems to be in the alpha stage right now.
I'm not sure if Popvox has all the features you have in mind. Rather than starting a new web service from scratch, you might find it easier to request certain features from an existing one.
I'm not sure if Popvox has all the features you have in mind. Rather than starting a new web service from scratch, you might find it easier to request certain features from an existing one.