To me weight is weight. The number of weapons I carry isn't really a factor that effects combat difficulty, as I can easily deal with combat situations with only a couple weapons. It's purely economic ... weapons are the most readily available sellable loot in the Wastelands. Being in a situation where I couldn't pick up that tri-beam laser a recently killed foe was carrying because I was at my weapon limit, but being able to pick up and haul off his power armor would just annoy me to no end. :meh:
Well, ideally you would not be able to carry the power armour either (unless you're prepared to wear it and drop your current armour). In my vision of this new 'Realism/Survival' mode the weapon/armour limits would be severely restricted, since these allow too many combat options and are an easy source of caps.
Also, in cases like the Super Sledge or Rebar Club - these are so large that they would occupy the slot of the Rifle/Shotgun (as they have to be carried on the back). But these are specifics really, to keep things simple, my current proposal is easy to follow.
Maybe the whole weight proportions are completely out - for example, a Sniper Rifle weight 8 lbs, yet a fresh carrot weighs 1 lb....are we really saying that carrying a large and powerful weapon such as this is the equivalent of carrying eight carrots? :huh: Having never held a sniper rifle before, I cannot say for sure, but I would imagine that the weight of the Anti-Materiel rifle of 20, is more realistic, but just for the Sniper alone. Maybe even that is too low.
Also, die once, and the game is over. This idea intrigues me most of all - actually picking your fights, or avoiding combat altogether, as the situation warrants. Knowing that your next footstep into unknown territory could be your last. Couple this to the weapon carry limit, and we are talking about a
real hardcoe/realism/survival mode.