This would be great... It would solve the start-game problems that ward off most new players. Much more realistic to start with a lighter instead of a flashlight. Also matches are somewhat scarce.

This would be great! It would add some variation to the looting aspect.

Ability to climb trees would definitely diversify gameplay, and it's kind of a rarity in games. It would give a nice needed breath from zombies, but wait too long and you'll attract a pack...