I really hope we get a ledger for Victoria 3, as the massive amount of information that we are shown to have access to in these dev diaries scream be organized in some form of easily accessible overview. I don't want to have to click on provinces frantically trying to find out which is in the worst economic state, or which one is producing the most oil, which enemy state province would be the most valuable to grab, etc. I want pie charts, graphs, plots!! Please bring them back in some form!
Our approach here is to actually try to figure out what information is relevant to a player in which contexts and provide that, rather than a ledger filled with raw numbers. The latter would be much easier (text-based infodumps are dead simple) but
a) it's overwhelming to a player who doesn't already understand how everything in the game works, which works against our philosophy on accessibility
b) as soon as we start to make information available in a ledger format we reduce the pressure on ourselves to make it available in a more useful context
So we do have pie charts, graphs, and plots, but we show them alongside the items they pertain to, not in a separate information system. You should absolutely not have to click through a bunch of states to figure out what's going on with them - we have summaries for that in a number of places, often using the map and sortable lists to visualize that kind of information.
That's certainly not to rule out the idea of a raw infodump function in the future! We can't intelligently pre-parse all information for all use cases and besides, a lot of the data is just really fun to
drown in absorb. But it's not our go-to solution for solving the kinds of use cases you're describing, since we have a lot of other methods at our disposal to expose that kind of data.