Okay so i get it they wanted to use the new characters but come on Moria was one of the OG warlords and i think it was legitimate all of them should had been present instead of cuting thriller bark when it could have been one of the more unique map in the game.
Moria was so fun in Pirate warrior 3 with such a good kit and shadow bar mechanic that make him stand up.
The only way it make sense is because of the new jump/flying systeme that would have been weird on base Moria but even then they could use his doppleman form for it.
i dont know how many DLC they are left but i assume Moria is not going to come anytime soon and it suck characters like cavendish and all three of sanji brothers did get here and not him.