I am not sure how this will be implemented, but I can see it being very useful to have a system where one could track past expenditure for certain things and have reminders or maybe a progress chart to basically budget for future expenditure.
For example, on my home accounts I have just added the bill for my car service and repairs. Because the bill was so large this year and last year, I put together a spreadsheet where I tracked what I was spending my money on the car each year. It turns out that I need to replace the tyres every 20 000 miles, the brake pads a similar period and brake discs every 40 000 miles etc etc.
In Manager I can put in what I bought each year, how much it cost etc but there is no way to track the mileage per item such as brake pads which could help you identify excessive expenditure as something wrong with the car. There is no option for reminders to state that you are approaching x number of miles and car is due for pollen filter etc etc.
This concept could be used for other things - like printing expenditure. You could track whether any given printer is costing you more than it should, car fleet servicing or you have machinery in your factory and you need to keep on top of when new parts will need to be replaced based on hours used etc.
I don’t expect this feature to be implemented this year, but I am mentioning it now, but it might work well with when you start work on doing charts as I can envision a progress chart being used to track lifespan of products. This may not even be suitable for manager as manager is an accounting program - it can’t be something that does every aspect of finance as this is outside of invoicing/sales aspect.
Just thought that I would put that thought out there as I am sure other people have the same kind of requirement - need to track lifespan of consumables/parts and notifications when replacements are due. Car Sevices would be a classic example of this for home budgeting. Fleet Services and Printing Costs as well as machinery would probably be some business case uses.