So, it has firmware issues and the support from HiMedia is (was) patchy at best. However, its basic hardware feature set is pretty good.
It's compact.
It's quiet.
Has an easily removable internal 3.5"" HDD.
Supports the largest capacity drives available.
Has USB 3 A ports.
Has a USB 3 B port (so the internal HDD can run as a slave to something else).
Has a decent (not great) remote.
Obviously it could have better SOC features and better image quality, processing speed, audio handling etc, but overall it is not a bad unit at all.
That USB 3 B port is pretty important to me as it makes large (25GB+) transfers significantly easier.
If the replacement handles higher resolution, fine. More video standards, fine. Better HEVC processing, fine. AV1 would be nice but not critical.
I could not give a toss about the wireless capabilities or wireless performance.
So, what is out there with the same basic hardware feature set? It would need to have a Kodi fork.