jriver is great for music
jriver is good (and getting better hopefully) for tv
JRiver has great and unique audiophile features (dsp, convolution, etc)
To summarize - great client (and server) software to act as media hub
plex is great streaming server (particularly because of the metadata, but also plex has is great for moving around the house as it remembers where you stopped watching and picks up automatically, transcoding is also good)... and because there is good support for embedded clients (tvs, playstations, roku, phones, tablets, etc). It is unlikely that jriver is going to get clients (e.g. for smart tv).
It would be great if jriver could (via home theater mode) be made to act as a plex client so as to get the best of both worlds...
Please note i do not want a dlna client, but instead want the features if a proper plex client (as I'm really not a fan of dlna!) with metadata, imdb, play from where i paused previously (when e.g. watching from phone)
At the moment I have a workaround of loading plex home theatre as a separate program from home theatre mode, which is ok but this is not great (mce remote focus issues, and want to use one app on htpc).
Mc is great but needs more integration like this (plex, netflix, tidal, amazon prime, bbc iplayer) ( all controlable via remote) to go to the next level
An alternative might be an updated plugin framework that allows for simpler open source/community plugins. At the moment plugins mostly seem limited to skins which implies it is not easy to integrate (im not a developer so may be missing something)...