You're right, but it's important that they fit into the world of Heroes. I've seen ideas for technogenic cities and completely wild concepts regarding langiers. Moreover, if you take pseudo-Egyptian or any other mythology, you need to preserve the spirit not only in the units but in everything else as well, of course without blindly copying the original. I am in favor of pure fantasy like Rampart and Fortress being diluted with pseudo-cultures.
P.S. By the way, are you Aleksei or Aleksandr? Just curious.
And as for the name — Aleksei.