Perhaps the key is: why, in MegaGlest standard installations, I see TWO techtrees, and the second (Megapack) contains also the factions of the first (Magitech)?
If Magic and Tech were identical in both techtrees, I would propose:
- removing them from Megapack, so preserving the glorious Magitech techtree, which existed from origins of Glest;
- renaming the rest of the Megapack to "Ancient World" or something similar. It would become a self-consistent techtree, and other factions could be added, like Egyptians for example.
What about, for example, a Roman campaign, in which Romans fight against barbarians (Norsemen) and other threatening empires (Persians, Egyptians)? It would be EPIC... and game, perhaps, could last longer.
And so on: there are many mods, some with only one faction, with different historical (or fictional) contexts, which could be combined in other techtrees... possibilities are infinite.