I think that this maybe interesting - https://github.com/offensive-security/exploit-database
Yes, I know that's a Offensive-Security product but honestly I believe that even Backbox team members uses a Exploit database as resource when doing pentesting. It's a useful CLI tool and also time saving. You may search and online but this tool have an offline database when you don't have a connection. Anyway, just saying, don't asking for myself, I know how to include this to my OS, just think that maybe a good to have this by default in Backbox. If idea is good as is, why not?