Perhaps there is a need for a specific forum. Although, asking Alexa to do some simple task on a Fire TV, is kind of a no-brainer, there are more and more complicated and involved tasks already that require a focus on Alexa and the Fire TV.
For example, incorporating the Alexa Plex skill to work seamlessly with ALexa commands to Plex app on FireTV to play one's own home-stored media on the Fire TV. This is very cool and handy, and I have it basically working, but I have hit some snags where I need help. I currently am involved in a discussion about this on the forum. I will give you the link so you see an example and maybe are able to pitch in. As you read it, you will see a link by me asking for help last month that no one replied to. If you click on that link and can help, I would appreciate it.
http://www.echotalk.org/index.php/topic,3463.0.html