Q: can you download apps to apple tv

No. You would use airplay and mirroring to access additional content

Can we the people suggest that it would be absolutely AWSOME if that was possible....because the ABC,NBC, and HBO Go and all the other tv apps would be awsome for use in secondary bedrooms etc. Just saying this could make cable obsolete in some aspects through apple products.

You can currently stream or mirror but if you wold like native apps you can provide feedback to Apple directly if you wish

https://www.apple.com/feedback/