Does anyone want to have AOE 1 Units/buildings , and architecture etc brought into AOE 2. Not skins, just the whole set of units. Just make them untrainable. Can only be used in scenarios. Can only be trained by use of triggers. That way, we could have scenarios based in antiquity. Not just medieval. The architecture effect can only happen in scenarios as well.
This added to the game will have zero effect on competitive play. Hardly anyone plays AOE 1 when compared to AOE 2.