I know some kid in real life who's nickname is Danny Boy... I guess that's a common one though.
Also B3 isn't going to be as slow paced as the previous Battlefield games, if you consider games like BC2 slow paced.
The funny thing is, it's going to have some maps as small as Call of Duty and they're going to offer Team Deathmatch with no vehicles, but infantry only. So basically there will be "Call of Duty" gameplay in Battlefield 3, as well as normal Rush and the other Battlefield modes.