Not really the other recent TWs already got overhauls. Shogun 2 might get a Korea mod when the Japanese invade Korea.

Dlcs come with patches plus CA locked all factions from being unlocked and left Seleucids out unlocked. Seleucids seem almost complete hence free-dlc but they could've gotten it done on first week patch if they put some effort into it.

Not too hard to make a "new" faction when all they need is a description, some stats, some gimmicks and boom dlc! Really just needs some editing mostly as the factions are essentially like clones and the units just get some stuff swapped around and a recolour.

Dlcs will not be delayed by patches when they usually come with patches in the first place.

CA told .Mitch that it was unintentional for the factions getting locked but it was because of dlc...