I understand the frustration of having names rejected. It's happened to me several hundred times!

We put a lot of time and effort (and money) into obtaining what we feel are good brandables and which will be accepted at BrandBucket for publication. When some of them are not accepted its very annoying and frustrating. I agree.
However we have to accept that if we want to be a BB seller that is part of the process. BB has been very upfront in their interviews on Domain Sherpa and in their press releases etc. saying they only accept a small percentage of the domains that are submitted to them. They only take what they feel has a good chance of selling to their customer base and target market. It doesn't mean the domain has no value or isn't good. It means it's not the right fit for their marketplace.
Although I feel frustrated by rejected domains, in my mind I'm grateful for the honest evaluation as I don't want to waste my money on publication fees and renewals if my domain doesn't have a good chance of selling. Instead I look at other ways to turn a profit on my domains. In fact, yesterday I sold one of my BrandBucket rejects for $995 on GoDaddy premium. In fact I've sold several BB rejects that way. So don't get hung up on rejected domains just keep moving forward and learning as you go. It's the only way to be successful and make money.