In lineage 2 there are so many data from which it would be possible to create cool statistics and cool graphics.
The coolest thing in my opinion would be the creation of a dashboard with a review of all the seated merchants, and a review showing who sells this or that thing, in which particular city he is sitting, his nickname so that you can find it by /target nickname. Also different statistics on castles, fortresses, etc. Who owns them, when the siege is, a history of conquests etc. Statistics on the heroes.