I think a big problem for a lot of the Forge owners is that they've already given up on the machine and moved on (either to the Shield or 'mainstream' consoles) - it's mostly the remaining ouya owners that still check for new games, and even then there's many that still forget about Cortex and go straight to Google Play... which is a bit of a shame in itself. I can only assume that the plans to get cortex on other Android TV boxes like the Shield & Nexus player have stalled (or are moving at Razer's standard glacial speed). As for the video, platform may help - do you have the same video on youtube? it may get a bigger audience there - the Skully Scape video you have on Youtube currently is unlisted, and that has nearly 30 views already - plus if you poke the Ouya/Razer teams on twitter or something, I'm sure they'd retweet your trailer about as well!
I'm no expert on this - but I've been helping the guys at R and R Digital with trying to promote their new game since I was testing, and it seemed really hard trying to get people to notice it at all! But best of luck