Have Podcat and crew spoken about how they intend on handling attaching allied/puppets forces to your command? It was a bear to deal with in HOI3 unless you went in and manually did it through the console and even then was time-consuming and clunky. Using the diplomacy screen to request troops never seemed to work as the allies always tried to defend borders where there was no threat. And telling them to assist in an attack never worked well across an ocean.
