Hello Age of Empires dudes 
I suggest that good and highly used mods get integrated in the core game from time to time. For example the possibility to increase the population or new civs. Then those things could for example also used for ranked seasons.
Furthermore good ideas like night time in the game could be further developed(idea from Age of Noob) .
For example so that buildings and units see less widely. So that it could be an advantage to attack during night. The developers could add possibilities which are not possible with mods.
What do you think about this?
Best regards