Saleen entrusted the task of organizing and training the mercenary group to Gurney. Saleen could not help himself from feeling gloomy that Gurney was the only one that turned out to be dependable amongst the pirates that he recruited in the beginning. He was too naïve back then to think that those pirates only needed training to form a powerful army.
Saleen was not worried about training as Daniel's subordinate would assist Gurney while Eleanor would be in charge of organizing and planning the training.
What Saleen needed to do was to build a city where the four kingdoms intersected. This city could potentially face threats from all four sides so it was necessary to build a complicated castle. Saleen only intended to use this place as a means to reduce losses incurred by his and Lex's armies and not to launch attacks.
Saleen could not possibly replicate Metatrin City again as the resources required were too huge.