1. There will be ragdoll physics for zombies, you can knock down doors/windows (or at least zombies can) and there's probably some other physics systems put in place, I don't think they'd do cloth though, it is rather resource intensive. Although so would rendering/simulating hundreds of ragdolls, so Sandswept will probably implement a decomposition system or something.
2. Well people don't leave buckets of ammo lying around their house, in fact I don't think most people even have a gun, so I think it's safe to say ammo will be rather scarce.
3. Ammo will probably be in random amounts, you know people discharge their guns every once and while, and in a zombie apocolypse this would probably occur more and more.
4. Not entirely sure where they might go with this one, because either side has merits, weapon endurance is nice and realistic and all but if your weapons are always breaking on you it'll be a pain and fun is the predominate factor in the design. Sure they could tweak it every once and while but if in general people don't like the feature it'll probably be out.
5. Well each character will have it's own individual traits but I'm not sure how far Sandswept will go in actually making your own character, they might make it like Mass Effect or Dragon Age or simply make it "Male/Female" and make the character be defined by their traits, or altered by their traits.
6. I'd hope so, it only makes sense. Although not all cars will have a full tank of gas, a charged battery, etc.
7. Well the size of your inventory does depend on your cargo space, back packs/pockets/etc, but as for how you access it I'm not sure how they'll do that. I'm hoping for a box system like resident evil/deus ex human revolution/etc because those systems can hold reasonable standards for what a bag can hold/how much space everything can take and they're easy to manage/organise/in general use.
8. Well Sandswept is going for the realistic approch so I'm thinking they'll go with the latter, opening the door, picking up the things inside it one by one, etc.
Most of these questions are probably not good questions since the game's in such early development, but still.
Oh no these are great questions, the game has been in the design stages for a few years now so Zag probably has a lot of this stuff either ironed out or have a general idea of how he's going to do it.
I actually have a lot of ideas for this game, but some of them might not be needed as they might require a different engine or whatever to the one you're planning to use, and some features might be expensive to do.. I think i have ideas that are too demanding, so maybe i'll just hold back on them.
Oh no please, post all you ideas, I'm sure Sandswept will be glad to see them and even take some of them into consideration.
Remember this game is still in developement, everything is subject to change, so your few suggestions can not only make it into the game but alter the very way the game functions for the better, so don't hold back! Keep in mind though there's no garentees.
Also it's good to keep in mind nothing I post is in any way official, all the posts answering questions outside the FAQ are just assumptions I make based off how I would logically do things and/or how I assume the Sandswept team would do them, the FAQ itself is different because it is constructed from things said by Sandswept employees, it's probably not completely 100% accurate but I do try to keep it as accurate as possible and interpret the information I find in the way/manner/context it was intended.