This video shows the potential of using Loft object in Parametric array.
If you array a loft object PARA cannot find the information about the PATH object (base line) To get access to the vertices of the path object or deformation properties you need to animate the object before you use it.
This video shows that random controller can produce Boolean values (TRUE-FALSE). For each object in the array Random controller returns True or False based on the user defined percentage. Higher value makes the controller to return True more often and lower value causes more False result.You can make decision based on the result of the random controller through a condition controller . This process is similar to coin flipping.