Just catching up on the thread. Basically yes, I needed it to function as a wifi extender since my wife really wants to use the fire stick. Where it is in relation to the modem/router in our house, the connection goes in and out constantly.
Installed it and here's the basic results. Streamed a whole episode of 30 rock in HD w/ no drops or bad artifacting. Not quite on par w/ streaming via direct connection, but leaps and bounds better than before. Last night my wife was trying to watch Top Chef and it literally buffered for 30 seconds every 5 seconds of show. It was the last straw.
As a sidenote, before I couldn't remote play from bed prior to installing this. Download speeds at my house top out around 28mbps. On the Vita in my bedroom, I'd be lucky to get 2mbps. After installing the Powerline adaptor, the Vita is getting over 8mbps download (which for the Vita's terrible wifi is great).
I booted up one of the later levels in Trials Fusion and was able to get Silver on the first try. Could have never done that before.
All that to say, thank you GAF!
If I knew it was going to make you use your vita more for remote play, I would have never helped!
Glad you got it working.