I wish I could care but I haven't had any respect for Blizzard in years. They've become a manifestation of avarice and anti-consumer practices. They clearly hate their fans and love only their customers' wallets. I still remember when it was confirmed SCII would not have LAN and would essentially require a bnet connection for any gameplay. There are threads still up on the SCII forums where customer support was talking people through disabling their goddamned network adapter just to get into their "offline mode." The absurdity. Complete with reminders you must still log in every 30 days to continue playing offline, of course.
One of the funniest things I've seen to date was when battlenet went down during what I'm pretty sure was supposed to be a huge pre-release tournament. They were featuring some well-known pros, trying to drum up more hype for the game, and then bnet just shat the bed. What a fustercluck! Even after the launch battlenet instability continued to impact some major SCII tournaments.
"SC3 in the works?" Whatever, I'm not buying.
Neat, navigable UI. Pulls posters, metadata, etc. Can generate "trickplay" images so you've thumbnails when scrolling the progress bar. You can sync playback across connected clients (I mostly use that feature for multi-room music playback). Restrictions by account and/or tags so the little ones don't end up watching Ichi the Killer, Saló, your complete Cronenberg collection, or that library you created populated by a script routinely checking the e621 API for the latest animation uploads.
Runs in browser and on clients for Windows, Linux, Android, probably iOS too but homie don't Apple. Took every bit of space but I even sideloaded it onto my old Samsung Tizen TV (wouldn't actually recommend, little slow, build an HTPC or just nab an Nvidia Shield).
If you can get by without any/all of that, nothing wrong just browsing directories and playing media with your local player on a single device. In my case I'd need to set up overly complicated network shares and then configure every single device I want to have access. I'd need to change how I organize my libraries, then probably spend a little time writing an ansible playbook (that'd only really be worth it when adding new devices in the future) but... no thanks.