[brazen1]

I use the official versions of KODI (LEIA v.18 currently) with an external player capable of frame packed 3D.  MPC-HC, MPC-BE, (with madVR and LAV FIlters) and PowerDVD v.18 to be exact.  This way I can play full rips as they were intended including menus and all the extras.  Or, main movie only that apply enhancements if I think I need them and forgo the menus.  Or, start playback with PowerDVD, watch all the extras and menu interactions including previews, then switch and watch the main movie with an MPC player and get the best of both worlds.  I do this without leaving KODI and just press a button on my remote.  I really don't understand your remote control comments?  Using a Harmony, media center controls are standard if you add them.  Now playing info is a matter of choice.  Either set the player to show it or turn it off.  Speed isn't an issue for me.  WiFi remote is limited in comparison to what a Harmony is capable of although WiFi works in a limited environment.  If your app has limitations, then you're limited what you can do with it should you desire advanced usage.  If this equates to using a limited player to match your limited hardware, then your horizons are narrowed and that's that.