I got one vault done to 200 dwellers, started a new one, got it to 100+ and then lost interest.
I might come back if the following is done, but I doubt it, the current state of the game = minimal replay value.
1) Death claws attack too often in the early stages. Since the death claw release, I've had almost only death claws. Maybe they ate all the raiders? I like the added challenge for a high level vault, but both the death claws and mole rats are too much when the vault is low level. (I know it is to make people buy lunch-boxes, but that makes it even more annoying).
2) Radio rooms and Storage rooms need to give XP. It is silly that they don't.
3) Raiders need to drop loot. Period.
4) You need to be able to let your dwellers equip stim-packs, trying to micro manage healing during an attack is the most annoying thing about this game.
5) The papier-mache vault door needs to be replaced with one made out of steel.
Thanks for the game, it was an amusing way to pass a few hours, but now all I want is Fallout 4.