That was one of the reasons I made the bed raid. I wasn't looking for conquering; I was looking for a big, quick, and fun battle. I think the orcs would agree with me. Like Blawharag said; we didn't sit and whine when we found the traps. We just countered them to the best of our ability. While we didn't manage to steal the beds, we did manage to do a lot of damage and actually make the Dwarf city look like it was assaulted by orcs. The battle really couldn't have gone any better. Both sides had reasons to walk away happy. We got to blow up chunks of your city, and supply room while losing mostly iron. You got to fend off a band of marauding orcs and even used one of our own holes against us at the end.
Instead of making more rules; I feel that strikes or warnings should be given out to people who are really just trying to cause drama over an event. If one player starts harassing a GM, or another player after a War Claim then they should get punished for it. If you're not willing to suck it up and deal with the War Claim rules as they are then you need to remove yourself from open-scale conflict. Just don't show up to the battles if you can't handle it in a mature fashion. That's not to say you can't criticize the system; just don't do it in the most jerky way possible after the event. Use the Feedback forums and start a discussion.