Correct me if I am wrong but weren’t official alliances coded in game as really nothing more than NAPs with a joint alliance forum? I don’t recall any other special features coded in for alliances, such as direct aid or family news.
It had alliance news later on + shared access to fam forums. The relations code ended up breaking it in general at some point.
The allied forum was good tho or just the option to look in each other forums to check infils or p lists. You can get a lot from discord just a pain doing up to read everything