you can replace the radio rooms if you want. either way, there is no other high priority room to put in its place. i left my breeders there near the bedrooms. you can turn the radio off without deleting the room.

how can you call this optimal for late game when there is radio rooms??

so for end game, explain why the layout is "not good"
because i haven't heard you give any specific advice.
i don't need to check reddit in 2024, YEARS after the game has been solved.

the 3x weapon and outfit rooms were a must for a long time. making the best weapons and armor non-stop around the clock takes forever, even with 36 dwellers working them (6 per room) all in +7 outfits to reduce the crafting time.

mr handy efficiency means nothing at end game. his job is to grab fires / enemies that spawn in empty rooms, before they spread. while the player manually drags dwellers from nearby rooms to help.

each power room would have 2-3 dwellers in proper outfit

"food & water" is nuka cola, with super dwellers (+17 endurance) each room filled with dwellers to the max, to fight deathclaws, ghouls, etc they all have top notch weapons. also my 2 best dwellers are just in the room next to the vault door for that duty.

the 3 teams for overseer missions are all in top gear as well.

any excess dwellers are sent to explore for loot. and return when inventory is full (because they never run out of stimpacks/radaways since theyre super dwellers)

I won't comment on each and every point you raised... you completely misunderstood my first comment, maybe on purpose because you insist on feeling attacked? - One example:

The first Mr. Handy you gain in a vault, is a real game changer, if you have the right place in your layout. - One floor needs to be power+food+water - Now your first Mr. Handy collects all needed resources (for up and above 100 dwellers) - Only 12-16 dwellers + 1 Mr. Handy powering your whole vault. - This is powerful in several ways. - This is what I meant, saying your vault has bad efficiency for Mr. Handy.
(I know this no longer matters end game. - See other comment.)

Will your layout work for end game? Sure, obviously you made it work.
Is it a good layout? No, it makes things needlessly hard. - As i said, if you look for a challenge, build your vault that way

With only a few adjustments this could be a really good layout. - Don't believe my meager 370 hours, believe obsessive players on /r/foshelter - Done.

(Why 1000 chars limit, Valve? Why? This is not Twitter, make it 2000 at the minimum.)

I'm nearing 400 hours; I've seen (and done) all the stuff you write about.

You put this here, claiming "Optimal Layout". - I can say, from experience: It. Is. Not. - Not for end game as you now claim and which you didn't specify when putting this up. - And for casual players/beginners it is even actively harmful.

It will hit them after "30-ish" hours played, mid game, when difficulty really starts to ramp. - Then they have to abandon their vault and begin anew or spend tens of hours reworking their vault while starved for resources.

(Been there. Done that. - I took it as a challenge, wanted to see if it could be done - completely reworked my first vault, with 100+ dwellers, no evicting! - demolished&rebuilt all elevators & most rooms.)

Was this on purpose? - Did you mean to make life worse for casual players?

@innuendo,
- i have like 1000 hours played on this game... this layout if for end game. after you've unlocked all the buildings and have worked toward 100 super dwellers...

- the elevators in the far sides completely prevent molerats from entering.

- mr handy can be used on every single floor in this layout. i have no idea why you think he can't.

- every single room is occupied by a dweller (except storage, bedrooms, training rooms, radios. depending on what you're doing end game). this makes fires entirely manageable with mr handy and dwellers on every single floor..

- when you are raided, your power drains insanely fast. the amount of power buildings i have is not too much or too little.

- if you have 25 or whatever dwellers out collecting loot, that brings a ton of junk and gear back. also 3 teams of fighters on the overseer missions simultaneously.

- the end game is all about training level 1 dwellers into 10 endurance before anything else. then slap on a +7 endurance outfit and go outside and level up. after that they can work where ever you want, or go back to training for agility, etc for better effect.

- when you get a radscorpion, you LOG OUT. because it will just pick random (likely empty) rooms and drain all your power, food, water. when you log in, he will pick an occupied room.

- higher tier rooms do more damage to your dwellers (fire, enemy) this is why i do not upgrade rooms unless for a special purpose.

- the low level dwellers will not die. if you watch them, and gear them. and stimpack them same as every other room with a fight. you actually want your level 1 endurance trainers to avoid leveling up from defending a training room, so there's that too.

What an amazingly bad layout. - Do this layout, when you want to make the game more challenging. Don't believe me; Ask FOShelter subreddit.

Only 3 out of 25 floors that can make efficient use of Mr. Handy; Way to make your life miserable in early/mid game...

Also no "firewalling" of storage and living quarters... fires/infestations will spread like crazy and be a real p.i.t.a.

Way too many power stations (and why only one nuclear?), stimpacks... 3x weapons&outfits are very hard to feed with junk, when each one can pump out legendaries below 10 hours, and rares within 5mins... also 3-wide SPECIAL is bad, your "kids" will DIAF, by radscorp and mole.

Only 3 things are good in this vault: Elevators to the sides; 2-wide stims/rads and nuka-cola at the entrance.

Oh and of course: Your Vault is only as good as your dwellers; Match SPECIAL for great effect.