I was wondering if it was possible to change a core install into a hybrid.
So I installed a core system and added a
Generic PC as MD with the web-admin. Unfortunately I couldn't add it to the core directly but it could be added as a top level device. Then changed the "This device is controlled via" to
CORE, put it in a room and emptied the "IP Address" field. After a reboot it came up (took a while with lots of installage) but the UI was displayed clipped (only showing the upper left corner). To fix that I clicked in the bottom left of the screen (normally the LMCE logo in UI1) and then the "Video Res & Audio Setup" button, which took me through the AVWizard that fixed the problem.
I'm guessing the other way around is even easier.