What do you mean with MFD? the central hollogram? the control panels on the sides of the pilot?
For the first Im using a little model, that updates his rotation each tick, pointing to the direction I want
For the second one, for now Its just a simple material, in the future I would like to animate it, or even make it show real status bars of the ship
I have not tried UMG right now so Im not sure if its a good idea to use it for that, I cant help you out with that, sorry :S