I think i did read your post evangel...I totally agree that willpower demonstrates graded changes in the power of GL's...regardless...no matter how much willpower they have i dont think they can change the nature of a GL rings power...that would be like a GL's willpower granting him mystical powers. Sue's powers can get past force constructs because she does not need to be connected to her fields to operate them...thats how she produces fields inside of things or people protected by fields.
GL's have a virtually unlimitted power source. Sue's power comes from hyperspace, the dimension we presume energies like gravity and strong nuclear forces radiate into our dimension from. Although its a little more scientific than a giant green lantern of energy on a far off planet...its equally unlimited. Sue's willpower is a big factor in how much energy she can wield...so is her experience...and how far her mutation advances...Sue has cut loose when she wasnt Malice...If i didnt read a comic for over a year I would not make generalizations about the characters and assume I was right. When Sue watched Galactus kill her family she lashed out and said that although she usually cherished intelligent life she had to stop him...Then she blasted a hole right through Galactus' chest. She also appeared to kill Exitar, the greatest celestial. She can always produce a field inside of GL's body if she has to...but she would probably just produce a field around his finger and remove him from his powers.