I inspect my brass/cartridge at every step of the process. Progressive presses deny that opportunity.
The cases in the LNL are retained in the shellplate by simple spring. I can remove any case, from any station, at any time- by simply pulling it out.
And I often do. I constantly spot check charge weight, bullet seating depths to be sure nothing's gone "off"...
If a primer seating didn't feel "right"... I take it out, and look at it...
The LNL can be EASILY run one case at a time, just like a single stage press.