Hi,
I dont see anything different to standard print dialog with that command.
In general there is not much special about functionality, it is all basic needs for everyone 
-each layout has it own settings (name, size, print options)
-print dialog offers to print all layouts (or selectable list) either keeping print options as defined within layouts or override for all
-it offers printing to one pdf or separately
-default naming should be according to layout name and optionally add filename as prefix or suffix with specifiable delimiter
-print options should be extended to control raster compression (highest quality (no compression), high quality (low compress), medium, low, … not only dpi
-option if layers are ought to be kept in pdf
Remarks outside of the print dialog scope
-improve quality of pdf exports →
currently with more detail views pdf contains some hidden geometry of detail views outside of its boundary