There is a significant difference between raspbian and OSMC which would not make possible what you ask for but you might want to check out this solution
I’ve made a small installer for a simple desktop, that runs fine on a pi2, pi3, vero2 and vero4k with the latest image installed. This in NOT an official desktop installation. The installer takes about 15 mins to install everything, with a few none vital warnings. It installs Xserver, LXDE core, Chromium, OSMC desktop background image and one Icon on the desktop, for a file manager. Finally a starting/launcher addon for kodi.
This installer, also installs a “virtual mouse & keyboard” controlled…