I like all of these ideas. Maybe something is important is leaving messages ( about loot, traps, dangers) so if someone finishes the catacomb, they can choose 2 users they feel had helpful messages. ( users who have messages at the catacomb just finished) It could be a dropdown.
Viewing post in Ideas & feature requests
Very nice! I had struggled to think of a way to offer scoring points to players based on messages, but leaving that in the hands of the winning player is probably a good idea.
Alternatively, if you have the time for it, programming a way for the game to recognize when Writing with the word "Trap" is placed adjacent to Traps could be a way to offer scoring.