I agree. This would be a welcome feature.
I currently keep a spreadsheet to help me in several ways. One of which is to see where my next targeted scouting is located. Because I have chosen to go ahead and scout constantly (but I leave the scouted provinces unsolved until needed), I keep track (via timer) when my scouting ends and needs to be restarted. In the spreadsheet, I also keep track of all of the goods required to negotiate the solution of each province (I am not a fighter). I basically note each province in order as if I was looking at the face of a clock. That way, I can choose the next province to solve strategically based on the goods that I have in stock. I know this is overkill for many people. Many folks would not care about this level of detail (if they are fighters, etc.). But this method has really helped me in tight spots to be able to quickly determine where I had been scouting, where I am going next, what I need to be producing, etc.
Because I have already built my spreadsheet, am used to it, and it holds more information than Inno would probably be willing to capture/provide, I will not be getting rid of it anytime soon. But, a feature like the one described in this thread would be nice and benefit a large number of players.