It should focus on military/economy? To which other RTS game should be simillar in style of gameplay/graphic? In which period should be olayed? Could it be fantasy like Empire of Elves/Dwarves? Any other ideas to bigger changes? What do you think?
The time period and graphics might change, but I don’t see the general gameplay changing. Age of Empires is always about a mix of economy and war, and always about history. It will not dip into the world of fantasy. I’m not saying that Microsoft should not make a fantasy genre RTS, but it should be a new franchise, not AoE.
As for AoE 5, I would prefer them to go revisit the antiquity/classical era of AoE 1.