Replace GPS monitor to realistic FMS display

Notice: This is not a request for a fully functional FMS, but for a more realistic looking FMS.

(Not my picture)
The FMC in IF is currently displaying GPS monitor, which I find very unrealistic. My idea is to let it display the flight plan ,heading and set altitude etc. Comparing to a fully functional FMS, this could be rather easy to implement (as we already have it in A350), and it will definitely add some realism to the sim.

Ooh yea good idea