Taking a quick look at things, IMHO the marketing side of the equation may be the biggest reason this hasn't turned into something bigger, very similar to why the TV CableCard DRM Kickstarter project gained so little traction. I suspect the DRM project wouldn't have collected enough funding either way, but I suspect there were quite a few more interested people in the WMC community who had no idea there was a Kickstarter project for it.
The Engen website doesn't have much on it and doesn't have the professional, polished look that's needed for people to take it seriously. The front page mentions a companion Android app, but there's no mention of iOS until you click the OneRemote link. The iOS omission alone on the front page could be enough to turn away quite a few potential users as they may just figure there's no iOS app so they're out. The screenshots on the OneRemote page also don't help matters - rather than cryptic names for things (I'm a developer, so I get it, but a lot of users will be turned off by that), such as 20160608_ORsave, examples should use friendlier names.
So you need to get the word out. I'm a long time MC user, but barely really know what Engen is about. It probably isn't something I would use anyway because I use a Crestron control system in my home, but you need to get the word out if you want people to flock to it. Contact the guys at Engadget, MissingRemote, and other similar news outlets to get an article posted about Engen. But polish the web site up first. I know you guys are a fairly small company and probably have a skill set that's a lot more heavy on the technical than marketing side, but projects like this really need someone who can wear a marketing hat to promote the project.
