There is no "character system" (dunno how to name correctly) in DoW III, like in DoW II. But there is elites.
I won't arguing, what's bad and what's good. I just wonder, why there is so few characters from previous parts among SM elites?
Macha, Ronahn and Taldeer as knight rider (yay, references) among eldar elites. Seems like that's all, who could be here, counting conditions. That's all right for eldar.
Orks... Here it seems all right too, counting their staff turnover.
And here we got space marines. Gabriel Angelos, Jonah Orion and Apollo Diomedes. It would be all right, but: you introduced rather a lot of characters in DoW II, which could be fitted in elite squads. Tarkus as sergeant of terminators, Thaddeus (supposing he is still alive) - assault termies, Thule (same thing as Thaddeus) - venerable dread.
How was such opportunity missed?