In deciding the types of class assignment that may be issued under section 169 of the Act, the Commission shall consider the following matters:

(a) whether on going controls are required to be imposed on the operations of certain apparatus or services;

(b) whether specified conditions are required to operate the apparatus or to offer services;

(c) the risk of the apparatus causing minor interference, major interference or harmful interference;

(d) whether the apparatus requires specific frequencies;

(e) whether coverage of the relevant service is to be limited territorially; and

(f) such other matters as the Commission may deem necessary.