The goal of the dispensationalist is to admit and accept the truth on the authority of the word. This is the meaning of Scofield's statement and it is the goal of all dispensationalists, I think. It should be everyone's goal, no matter what their pre-suppositions may be. That is the point of this thread and to point out that it is the motivation of dispensationalists.
I certainly agree that it should be the goal to submit on the authority of the Word, regardless of the pre-suppositions. Apparently where we will have to agree to disagree is on whether I am justified to carry suspicion on this matter as we are instructed within the whole of the Word. I hope that the leading motivation of dispensationalist in general is as you say; and again, will not beyond suspicion.