after a few years of using such a box, let me summarize my experience with entertainment apps:
.. apps come and go
.. free basic, sd apps stick around a lot longer.
.. free good hd apps get harassed sooner or later; some last 2-3 years, some last 2-3 months.
.. great free eng apps are few, get harassed very quickly.
.. china free apps are plentiful but the best ones get harassed too, play cat and mouse.
.. free apps, eng or chinese in sd, 2nd or 3rd grade, easily found, even legit ones in smart tv playstores.
.. kodi is a great platform but addons come and go like apps.
.. reliable free live sports apps or addons are hardest to get.
.. big library korean, japanese, chinese videos with ENG subs are also very hard to get.
at this time, i use these free apps that work good:
kodi - primarily quasar (movies), adriansupertv (sports) and bbts addons (lifestyle)
mobdro - for news; in sd but is reliable.
kissanime - only for naruto shippuuden.
popcorntime - movies
tvplus2.0 - china live tv
viki tv - chinese tv series
togic, cibn, imgotv - chinese movies, tv series.
have deleted all other apps since they are either poor in quality or low in reliability.
i am also using hypptv and torrents.
no shortage of stuff to watch, all for free, no complaints.

Thx for sharing great info.