I can tell you're a big AOE2 fan. I'll admit I didn't give this game much time, but a couple suggestions that would have improved the game:
- Prevent workers from building on top of mineral deposits and units
- Allow players to set gather points for their buildings, and to queue up multiple units
- Unit variety: Since you're an AOE fan, I'm sure you could have borrowed the rock-paper-scissors design of infantry-cavalry-archers
- Map variety: Making some unpassable obstacles would make make the game more interesting and also let you practice programming AI pathfinding
Best of luck in your future games!