On Day 1 of Patch 1.18 I got a couple of PT invites (for my ARC) out of the blue because they wanted me for Toto-Rak. I declined as I had not completed the req. quests yet. I took my time, did all the available quests from all 3 Companies, then set myself to "Seek Invite" till the 20 minute timer ran out but not before doing a Search which only returned myself as "Seeking".

Then I created a Seek Members for Toto-Rak "room" but again the timer ran out before anyone responded and this time a "Search" returned no results as not even I was seeking a PT anymore.

It does seem as though it would work (clumsily) if people used it but it stinks anyway so please add this to the Fix-It List, even prioritize this as more PT content becomes available.