When I had my Rosetta on the radar screen top right it used to show the local QNH (and where it came from I think?) and I can't seem to find the setting for anything similar on FX. If indeed it is there? It was always a useful visual cross check to see the latest, in my case, East Mids, QNH displayed.
FX performing really well though I did prefer the Rosetta Radar layout which seemed less cluttered.