Vlad
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maybe not all alternate upgrades will be for the Renegades. There are pictures on the websites of swordsmen with a two-handed sword and a pikeman (maybe a peasant) and others, and the Renegades had the same upgrade as the regular Fortress units with horns. So, anything is possible.
I mean that there won't be Renegades as neutral units...
But this won't affect the balance as much as the alternate upgrade... Anyway, I hope the add-on comes out soon.