1. what kind of flight licenses are contemplated?

Currently licenses can be for professional flights or licenses for general aviation. If you have a professional license (MPL, CPL or ATPL) you can fly in commercial operations (such as an airline flight). General Aviation Licenses (LAPL, SFCL. BFCL, PPL) are for recreational flights only and no remuneration is obtained with it unless exercising privileges as a flight instructor, for which you must hold the corresponding certificate in force. 

General aviation licenses are the light aircraft pilot license (LAPL), the private pilot license (PPL), the glider pilot license (SFCL) and the balloon pilot license (BFCL). Professional licenses are Commercial Pilot License (CPL) and Airline Pilot License (ATPL).