I don't know what to tell you then... Obviously Apple feels its not an immediate issue and you won't let them take it from you to look at it. Apple is under no obligation to replace anything just because you need it for a business. If something needs to be replaced, then they will replace what needs to be replaced. Apple can't just go around replacing computer after computer just because of an issue it has. It would cost them millions. I'm a tech in a local computer store here and we have our own customers who run businesses off computers we sell to them that we have to send their computer in for a week or so. It happens dude....
Apple is trying to help you by offering to send the computer in. Just because you need it for a business, doesn't mean Apple has to send you a new one when they can just fix what's wrong with the one you have. Case warping doesn't effect the way the computer works. So you can bitch all you want about that and Apple won't fix it. You can throw it in the trash and buy a Dell, Gateway, IBM, etc and if it had a warped case, they also wouldn't replace it because it doesn't effect the way the computer functions. Apple can fix the overheating, battery and possibly even the display, but you're going to have to bite the bullet and send it in.
You can get pissed off at me and call me names all you want because you didn't get the answer you wanted to hear, but I'm just telling you the way it is. Sorry....