Adding my vote, a navlog is for me the last hurdle from making Charts my only planning tool for VFR piston/turboprop flying in the sim, and also for a good portion of IFR flying. Currently I still supplement it with SkyDemon and/or Skyvector, but a all-in-one with Charts would be great.
Wouldn’t even have to be too complex for my use; track true and mag, distance, level (selectable), average leg wind, leg time based on distance/TAS, and hey presto! Stuff like automatic wind correction angle/heading and GS calculation would just be a bonus, I’d be more than happy with some simple arithmetic.