Are you going to make WC1 Human Guard Tower and WC1 Orc Watch Tower? I know there are no towers (I am not talking about Conjurer and Warlock production structure) in Warcraft: Orcs & Humans but in War1gus mod there are towers. Here are images for both human & orc faction. Also, you can consider adding them as base defense structure for your altered melee map.
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By the way, the new version of Human and Orc towers (WC2) are perfect. Maybe team-colored X could be a bit more thicker but the model is great anyway. Nice work buddy.