I bought a Mi Box for my in-laws for their Netflix stuff, but also gave them a hard drive with content preloaded for other stuff too. I use PLEX at home with a Shield/Apple TV (sometimes Infuse) and have realized that it's quite different w/o a server. Mainly, it won't work well and most apps i've seen have no meta data or are poor GUI-wise.

Is there any alternative to setting up something that's almost as robust in GUI terms like PLEX? Currently i'm using SPMC and while it's sufficient, it's not very optimal and a lot less user friendly. Infuse for tvOS is pretty much the gold standard in usability and the fact that it does not require a server, something like that which can read off a USB attachment.