<All pilots should include the EPR/N1/whatever you like to use in their scan> absolutely correct.
However, one thing we were trying to establish was the influence of non-instrument information cues in overall situational awareness. The survey we did got responses from 70% of the pilots on the fleet at the time - about 100 in all. One thing that came out was that some pilots make very little to no use of non-instrument information, but most use SOME peripheral cues. Thrust lever angle featured high on the list of cues for power demanded, and engine noise for power delivered. We concluded that neither existing concept as currently implemented was an ideal solution that would satisfy 100% of pilots 100% of the time. Some pilots will be very satisfied and others somewhat dissatisfied with either system. It's simple human factors - everyone comes with a different set of learned cues from experience so reacts slightly differently to new circumstances.
If there is any demand for it I can make this paper available but, it isn't going to result in any changes to system designs!