Back in TW1 we were able to send one scout with an army to know how many resources are left in the village. Is there possibility to include such information? That would be helpful I think.
A simple script would work. If a player attacks barbarian village extra information would be available to view in the report. Simple as that. Also, such information could be included in the report if a player attacks inactive player: If there is in no defending troops in the village - extra info available. If there is one simple spearman - no info...
As it is right now the battle system and the spy system works independently of each other - there would be no easy or simple script to make these work together.
As we stand right now this will not be implemented or considered for the many next updates.