like more customizible weapons or homes
alow player income
or sit at a bar and put your feet on the railing
smoke some of the numorus ciggarets you find in the game

A New engine is the first priority.

Yeah sounds fun. Building a ranch or some kind of settlement would be fun and using the new radiant AI Ai characters should talk about your personality, are you a drunk, an avid smoker, evil, good, helped who and where.

previous fallout games have been really interactive. like starting with a new engine like DICE's frostbite. make destuctible inviroments make the game more YOU

Destructable environment would, I only assume here as I have no inherent knowledge about these things, limit the way the insides of those buildings are designed. DICE doesn't put much to interact with (objects and NPC's) in their houses for a reason.

Correct me if I'm bulls**tting here.

you have a piont but it would be kinda cool blowing up a building in fallout

but makeing fallout a little more immersive would be fun

earn "caps" to customize your guns or houses or make fallout have investments in settlements
back to the topic why put so many ciggs in a game if u cant smoke em'
alow the caracter to relax,chill,get laid, make the player have a personal life in the game

You meet characters like the rancher who made loads of money on the brahmin ranches so why can't the main character.

let the player have income
put motorcycles in the game
or cars