Will GW Keep Adding Daemon Primarchs?

With all 4 of the “Main” Daemon Primarchs back in the setting, will Games Workshop continue on with the Chaos Undivided Primarchs or will they be done?

Curious on what people think about this, whether it would even be a good idea or not from a tabletop perspective?

Furthermore, would GW make sure to keep an equal number of traitor and loyalist Primarchs in the 40K setting?