Taiji

So, why didn't anyone notice this hidden overpowered unit and play with it?

Because not everyone always plays with overpowered units? And Revan himself wrote to me about the overpowered nature of those succubi. By the way, the same goes for the Kal'var.

Alex picked the Kal'var in the first match solely for ideological reasons, just like I picked the succubus.

Does that somehow negate their overpowered nature? I picked the Yan'shi for ideological reasons, but that doesn't make them any less overpowered.