I'd like to see this expanded to show the full text, the representative's summary, and constituent comments for the bills, codes, policies, docket, whatever they are actually going to be voting on.
Then, show how they voted.
Then, show how they voted.
In my experience, sites that do this sort of thing usually fail. They're ghost towns, and no-one cares what an unrepresentative sample of internet people think about bills.
I'm not based in the US, but I think the other points are covered by sites like https://www.govtrack.us/. Open Congress was another, but was shut down when the Sunlight Foundation went a bit haywire.