Would it be possible to bring Delta-shift (showing difference between the actual position and the average position for this resonance like in the Peak Assigner) as an optional column in Assignment Inspector? I find Assignment Inspector very useful to hunt misassignments. One thing I have been doing is to sort specific resonances (e.g. Ala2HA) by chemical shift in the AI and then go back to the spectra with the largest deviations from the average to see whether this deviation is indeed due to slight difference in chemical shift in this particular spectrum or a possible misassignment. This is useful especially when I have many different spectra with cross peaks reporting on long range restraints. Being able to sort by Delta-shift in the AI would facilitate identification of possible errors.