I wish there was a way to decline new dwellers. I have a maxed out vault and keep getting people from lunch boxes that I don't want and I hate leaving them standing outside - so my only option is to evict a fully trained person bring in the new person and train them up. If they were legendary dwellers that would be worth the hassle but random pleb isn't worth it - I'd like to just turn them away at the vault door.

That'd be a fairly good idea, declining new dwellers would add a level of immersion and clear up the annoyances that certain players have; such as yourself.

Why not just stay at 199 dwellers? Then, whenever you get an unwanted dweller, let them in, kick them out, no need to evict anyone else.

In order to keep the dwellers happy you need to keep the radio stations up - which means that unless you are maxed out you are constantly getting a line of people outside - either way - you are taking in a bunch of unnecessary dwellers and opening the door to constantly getting deathclaw attacks - just turning them away at the door would be better.

Evicting dwellers still need to open the door, thus inviting the death claw.

Also when you remove a dweller from the radios room, happiness will go down.

I do not use radio rooms.

Developer should add the option to disable the outside call. ( on/ off)