I find that kind of "extra cost" to be, quite simply, less fun.
In a group, why should a RCI effectively play with 1 refresh less than the rest of the group? Because that is the effect of forcing a player to take a power the character gets absolutely nothing out of.
Of course being a RCI is a downhill slope, just like playing a Changeling, only steeper. But that is easily, and more dramatically, taken care of with compels.