One of my favorite mods for Skyrim is this one: http://www.nexusmods.com/skyrim/mods/49784/?
What it does, among other things, is to show the currently favorited weapons as equipped on your character. So you can run around with a bow on your back, a dagger at your side as well as a mace and whatever else.
It's something I find more immersive then weapons magically switching when you press hotkeys, plus you kind of look cool sporting all that hardware. Almost like you're a dragon-fighting hero or something...
So the point of all this - I'd really like to see something similar in Fallout 4. Pistol, rifle and combat knife and maybe grenades/mines displayed as favorited (I'm sure FO4 will have hotkeys in some form).
Who's with me?
(And yes, you can over-do it, but it comes down to some self-respect and self-control, as usual. Or not, whatever is your fancy. You wanna look like a walking pile of nuclear destruction, go for it. Just go the opposite way from me. In case you trip.)