With people moving on to gathering capacity points and other newer content, it's now very difficult (read: impossible) to get a party for assault missions these days. This is one of the few types of content where Trust NPC's can't currently be used, and some types of content just can't be done solo.
My personal preference would be for them to just make Trusts usable there, but until then does anyone have any tips for someone who wants to increase their rank?