[noggin]

Thanks for clarifying this.
Is there any chance that one of the devices I named will support Frame-packed 3D in the future (e.g. SATV or WeTek Core)?
Does Framepacking also have an effect on the deepth of the 3D effect?

Frame packing is the way that 3D is output at full resolution over HDMI. It is how you get a 1920x1080 feed to each eye separately. But you need a source that is also Full HD 1920x1080 3D for each eye. This is usually encoded in a format called MVC (Multi-View Coding) and is what Blu-ray uses. (There is also a 720/60p variant for use on 3D sports Blu-rays where you want a much higher frame rate than 24p)

Almost all other 3D content (broadcast TV 3D or conversions of 3D Blu-ray) uses either HSBS (Half Side By Side) where each eye is halved in horizontal resolution to 960x1080 (or 640x720) and both eye feeds are output next to each other, squeezed into a single 1920x1080 (or 1280x720) stream and output in this format for the TV to process into a 3D picture, or HTAB/HOU (Half Top and Bottom or Over and Under) where each eye is halved vertically to 1920x540 (or 1280x360) and the two eye feeds are displayed one above the other in a 1920x1080 (or 1280x720) HD stream. You don't get much more than SD 3D with these formats.

The halving of horizontal or vertical resolution is very obvious when you are used to Full HD - and the quality is definitely inferior. It really is like the difference between SD and HD 3D. If you have an active 3D TV then you will get 1920x1080 Full HD resolution when watching Frame Packed output of 3D MVC content. (If you have a Passive HD set then you will be getting 1920x540 to each eye, dropping to 960x540 to each eye on HSBS stuff - as Passive HD displays send 540 lines to one eye and 540 lines to the other. Passive really delivers excellent results on UHD sets though - where you get 3840x1080 fed to each eye and none of the flicker of Active glasses)

The Raspberry Pi 2 is the only platform that currently support 3D MVC MKV and 3D Blu-ray ISO formats playback and output in Frame Packed HD within Kodi. Other players either don't support MVC/3DISO or use an external player (which may or may not be skinned to look like Kodi's player)