And yes, there are a few primdice owners (for example) who have given out their full names before now. Why can't wetsuit do the same, what's he in fear of?
It would be considered more trustworthy as a site if you both offered your full identities.
It is not something I have or will ask wetsuit as I think if he didn't want to be anonymous he wouldn't be.
From a personal perspective, I use services like ChipMixer so that nobody knows how much Bitcoin I have. If you own a site holding over 1200 BTC just in user deposits that isn't an option. Do a Google news search on 'bitcoin kidnapping".