Ok, now that I've been able to actually pay some attention to the game today, I think I'm with Xsyven on this one. A name claim can have its advantages, yes. In a game like this, where character roles follow a discernible theme, it allows us insight into what abilities each player has and how they can benefit the town. And hopefully it would shed some light on those who are mafia or independent or whatever.
However, I'm against this idea for two reasons. First, we may well have already lost the best weapon we would have had in making a strategy like this work: our investigators. Really, the cops would have been the best characters to have for this idea, by being able to factcheck suspicious claims. Granted, there's a chance that there's someone out there who has a role with some method of identifying people, but with two investigators dead it's pretty slim.
Second, like Xsyven has said, with this wealth of information comes consequences and potential dangers. The mafia will know everyone's name as well, and be just as likely to discern who has what abilities and plan their strikes accordingly. Although I was just proven wrong about doctors not being able to protect themselves, that would only reintroduce some of the Doc guessing game. And we don't know one way or another what restrictions our Doc has. Furthermore, going by last night's event we have at least 2 heroes to look after. I don't know about you guys, but if I were Batman I'd be pretty reluctant to just come out and say I was. And like Goldshadow says, it's not unlikely that there could be some pretty believable false claims. There are a lot of characters in the Batman universe, even if a lot of them are villains.
That said, I'm still pretty hesitant to reveal myself. I'm pretty sure I'll just end up lynched or dead.