Improvement on Fuel Calculation and reporting

I am kindly proposing an improvement on fuel usage calculation and reporting (if doable).

1. On summary report, the system appears to be using start fuel - end fuel and not taking into consideration any refuels, for example, if the day stars with 100 liters, which is all used up then refueling happens at the end of the day, leaving the fuel at 99 liters, the summary for the day will only show 1 liter as spent fuel which frustrates clients. I was wondering if there is a way to maybe calculate that summary from trips (spent fuel) or any other means that takes into consideration refueling events.
2. If we can have a fuel usage report, that would be very helpful, which can show things like fuel increases during a period and fuel drops during a period, potentially with the ability to pin the event location on the map. It would be extra helpful to include driver info if available so as to smoothly identify refueling and potential siphoning without digging through the logs