Strongly support and agree! Particularly being able to sort by type and strength would be incredibly helpful.
Additionally, having troop counts ON the Party Management screen. Currently "Troops" is a collapsible section above "Prisoners". It'd be nice to have a TOGGLE that allowed me to have sub-categories of Foot, Archer, Cavalry.
I find myself clicking and dragging the portraits in the Party Management screen, except the scrolling doesn't work if you've got a portrait selected, so you have to drag them to the top of the screen, scroll up and then drag again (repeat) if you've got an army with enough troop types in it.