HDhomerun channel scan
I'm using two HDhomerun (quatro and duo) which been working quite well with tvheadend.
In tvheadend the pre-defined muxes does not provide an exaustive list of all the channels that are available in my area. As such channel scanning is a bit painful (I ended-up generating my own dvb_channel.list using wscan + dvbv5-scan)
I tried Jellyfin a few weeks ago and was surprised by its ease of use (although I prefer tvheadend as more reliable). One interesting thing was how it manage hdhomerun: it has the ability to fetch the channel list from the remote adapter. As such it does not need to "scan" for muxes at all, it simply use the already scanned list using the devices API. Option are to use all channels or only favorites or discard disabled ones (as favorites & disable can be done from the admin web page on the hdhomerun).
All in all, it would be great if tvheadend had a similar behavior built-in which would simplify and futher automate the configuration and usage significantly.