I wouldn't mind seeing my arch-enemy getting their *ss handed to them once in awhile. But why not simple text messages, such as 'Drengin fleet #x defeated Torian fleet #x? Or messages about attempted planetary invasions? Right now there is no way to know if warring factions are actually DOING anything, other than making the 'stink-eye' at each other.
| having such a feature might allow too much intelligence regarding the strengths and weaknesses of enemy fleets. |
You have (potentially) unlimited access now. Max out your espionage, and you will know everything there is to know about your opponent. For fleets, and individual ships in transit, however, you will have to have them in sensor range. BTW, the only 'dumb' question is the one that isn't asked.