(Sorry for thread necro, not sure what this forum's policy is on that.)
Personally not a fan of the recruitment beacon, and I generally turn them off after having to build them, in cases where you do have to build them.
Instead, in my game, I use two mods,
Tales From the Commonwealth and Recruitable Settlers, both of which add a bunch of NPCs that you can send to any settlement you've unlocked. Since both mods do the same thing, you will often find two (or more!) recruitable settlers in the same area, but it kind of makes sense, that there are a lot of displaced people who will happily go to your settlement. Now, when I need a settler
right now, I open
Cheat Terminal and spawn a random settler, or I pick a gender and then random, or male, female, and random if I need three. While I'm not a fan of cheating, per se, I'd rather use Cheat Terminal to spawn settlers, than to come back to a feeder settlement like Starlight Drive-In or Sunshine Tidings Co-Op and have 20+ settlers and just assign them places. That's too much work. The way I do it, I send people where I want them, and then I build the settlement up around the settlers, as it should be, IMO. So of course you need a system. First, all ghouls go to The Slog, because that's Wiseman's dream, ghouls being productive. I put more ghouls on farming, and have them run stores, and put the rest into defense. The Slog becomes ghoul city. Wiseman's dream achieved. Cool people go to Red Rocket, it's mainly where I send companions after I'm done with them (got their perk). Hardy, salt-of-the-earth types go to Sunshine Tidings Co-Op or Abernathy Farm. Since the Abernathys lost their daughter, and if you play a male Sole Survivor, there's a chance Blake Abernathy can tell you to keep your eyes off his other daughter (not sure what triggers this), I'm real careful about who I send their way. Usually just women, but if there's a real young looking dude, I like to roleplay that he's Lucy Abernathy's boyfriend, though I build housing (pre-SS gameplay) for non-Abernathy family settlers. Also, if there's a real young looking chick (think post-change Curie), I like to roleplay that Blake and Connie Abernathy adopted a lost young woman. So yeah, I kinda get serious with my settlement building. Lastly, robots would go to Graygarden, but I haven't seen any. I do know one comes with SS2, so when I meet that Assaultron from the trailer, I intend to send her there, if I can. I generally don't like doing
Automatron (too buggy, especially the Mechanist fight), but when I do, I build my robot workshop at Graygarden, and tend to build Mr. Handy/Ms. Nanny robots, some Assaultrons. Robobrains being too slow, and Sentry Bots being buggy.