For AOE IV, my main and very fervent wish, is to have the feature that AOM and AOE 3 both have, which is to disallow building military buildings too close to enemy TCs. The main thing I dislike about AOE2, is the CONSTANT forward building of overpowered castles in my economy. It is an extremely popular tactic, especially at ‘average’ levels, because it is extremely damaging and extremely hard to stop. And, if you do stop it, the game is often heavily in your favor because you killed a bunch of the enemy villagers. In other words, it makes an otherwise good game end abruptly. I know people like doing it because it can result in an easy win even when you are behind, or if you have even slightly better military numbers, or if the opponent is out of position or doesnt notice it in time. (Which he won’t if you use enough villagers to build it, it goes up super quickly).
I want to play and win with units, not buildings. Buildings should be a defensive, not offensive unit.