I thought about adding more feedback to the chat. Feedback means things like "upgrade xyx finished" in this case.
I added this but now it lacks of more ideas for feedback-sentences.
It would be nice if you suggest some more feedback-sentences which could be useful please.
I thought about something like "building xyx is finished". Would this be nice? Should they be techtree specific? (like only if a 'castle' is finished you will get feedback)