My Mecool Km2+ arrived at the weekend and I've spend a while battling through the apps/setup.
Google assistant almost useless as it only searches Netflix/prime video, and not KODI (which I use to stream from my NAS)
KODI 20.2, I had some problems as browse-able SMB network is disabled (for my own security you understand) after V19.1, eventually I got it working by typing in the SMB address by hand. (smb://NAS326/WD-Elements-24A3-1013/HD Movies). Now it works quite well but isn't searchable by Google Assistant.
HBO GO, this is also quite well integrated, but again not searchable.
The remote is very useful, it can control my TV inputs and my Soundbar volume, and the four 'goto' buttons are programmable so I can use KODI, VLC, an HBO Go directly.
So pretty good for 1,780bht, shame about Google Assistant, would have been good if it searched the apps I selected an not the apps they selected.