I find it interesting to mention that Dalaran contributed a lot to the Alliance and Azeroth. One of the events that I like to remember most about the positive contribution is when the Second War ended.
Antonidas was one of those responsible for preventing the extermination of the orcs. And as time went by, he studied the orcs and wrote a book called “Lethargy of the Orcs.” In this book, he raised important questions about what could have caused the orcs’ extreme violence when they invaded Azeroth and why they became less violent over time.
It is possible to say that Antonidas contributed greatly to the members of the Alliance starting to see the orcs not just as invading monsters.