Key Features or Changes - Wondrin'

Does anyone know what kind of key-gameplay features are being changed? Like pathfinding or AI I assume?

https://forums.ageofempires.com/discussion/365/what-we-know/p1

Here’s an amazing post detailing nearly all of the things we currently know, including what features they might be adding/changing. It’s an amazing summary so you should take the time to read through it all!