A really simple one, but useful nonetheless:
When a scout finishes an assignment, and the message is delivered to your inbox, IF he has further assignments queued up, then the message should say at the end,
" Scout X is now moving on to scout Area Y, as requested by you". This would stop you having to keep checking every now and again to make sure they haven't run out of assignments. Now, I know this is ONLY useful for VERY big clubs, but I have 24-25 scouts at Real, and it takes some time keeping track, so I tend to queue a large number of them up with assignments leaving the best few for the important stuff.
Also, I would like to be able to leave my scouted tournaments there, as finished assignments. I don't want to be able to scout more than one tournament at once - that is impossible - but I would like the historical data kept. It is much easier to find a scout report sometimes - you might remember that the report was from the ANC or Asian Cup, or whatever. Just helps a bit, I think.
Finally, I would like to once again propose my "On This Day..." idea, as I do every year.
It would be great if you could have, every now and then (frequently would be very irritating) a news item detailing famous exploits from the past (for your career or the club you currently manage). The club ones would only start from the day the game starts, no pre-loaded events. I think it would be nice to be remembered when you managed that giant killing, signed a player who went on to become a club legend etc., and cringeworthy, but sadistic fun to be reminded of your darkest moments. There are many event types that could be added - all the data is already stored, so it is no big deal FM-wise.
What do you think?