Okay, I'm stumped...
I've equipped Sanctuary Hils with beds, food, water, electricity, and enough turrets to hold off a batallion of raiders. My population, however, seemed stuck firmly at 8. I had a recruitment beacon on the whole time, but the population just isn't rising.
I gave a nuka-cola to a thirsty fellow in Diamond City, and he agreed to go work for me in Sanctuary (becoming one of the eight). I've sent people from other settlements to go work at Sanctuary, bringing the population up to about 14 now, and given the jobs.
Why, oh why, is that radio beacon not doing anything on its own? And it has juice flowing to it, and the switch is in the on position (green light lit).
As if that weren't enough, I've built the level 3 trading stands for each type of vendor. In my wanderings, I have since met two merchants (the random encounter ones, not the merchants that roam in a circuit) who agreed to come and work for me. I've asked them to both go to Sanctuary Hills.
They are not there, and it has been days in game. I've rested at Sanctuary Hills, fast travelled there, and nothing. I built a bell and rang it repeatedly, and those special merchants aren't in the group that gathers round.
Where, oh where, can they be??