Missing points in flight planning

Hello,

I’m still in the testing phase at the moment, but I’m considering purchasing VFRNAV.

To eliminate paper planning, I’m still missing two vital points:

(I fly in a mountainous region with an aircraft type that has a center tank in front of the pilot)

1)The weight-and-balance calculation must display the tank fuel level as a straight line in the graph. With baggage the aircraft could become tail-heavy when the tank is flown empty.

2)The takeoff and landing distance depends on density altitude. A calculation of this including further factors is important. Tabular, with custom safety margins