An airline costs time and money. Those who do not want to simply throw these resources out the window should first think about a concept and sound out the chances and possibilities. Initial questions can be:
If you already have a conclusive concept in mind, you would do well to put it in the form of a contribution to one of the forums. The Airline section of the FTW-Forum is best suited for this purpose.
This is the best way to find interested pilots who may even have similar goals and are looking for personnel.