As a mainly VFR flyer, and recent Navigraph subscriber, I would welcome the ability to be able to set my default Flight Mode to VFR, and to set my default Cruising Altitude from 38,000ft to something more … achievable for the types of aircraft I usually fly. 
In other words, the options that appear here:
The Chart Mode can already be set in the Settings page, but as far as I can see, the other options cannot. The altitude doesn’t appear to have any real bearing on my planning within Navigraph (at least not that I have noticed yet), but assuming that in future it may be possible to generate a flight plan for VFR routing, it could be beneficial to preset it to something that is more befitting a GA aircraft.