I do like the idea being able to grab anything around you and bonk the enemy in the head with it - sure sounds great and realistic. We also have to contribute to the idea that 1) is the item pickable as a weapon. 2) How much damage it serves. 3) What is it's breaking point. and so on. I think if you hit someone with a vast, it'll possibly break at least I think so....Or possibly that's what the Three Stooges showed.
Last note of all, it wouldn't be cool at all if I let the player pick up a huge dining room table because man, that would be messed up. So, we'll have to give a weight attribute and give the player a strenght attribute. Car 1000 pounds, player strenght - 25 or whatever.
Share your thoughts on survival horror game weapons - they can be melee or anything else.