If Bethesda don't patch it in, the tracking of all neutral/friendly npc's that was in FO3 and NV via the compass. Currently its only hostiles but I really want that feature back, especially when trying to find my lazy settlement workers or my companion.

I'm ok with neutral and friendly tracking. I just don't want it tracking unaware hostiles because it makes stealth too easy knowing exactly where an enemy is before agro'ing them.

any way to find unassigned settlers will be welcome!

I can' help with modding the compass to do that, but I can give you some advice I read in a tips thread.

Dress your assigned settlers alike. Assign each job type a specific uniform (e.g. merchants in business suits). That way, when you see a settler not wearing their assigned clothes, you know they are new and need to be assigned a job.

Edit:
According to what I just read in another thread, you can create a bell tower to summon all of your settlers to one spot.

yes, tracking settlers is hard