If you look at the beta version, email and real name are listed as optional now, so that solves your first issue.
As far as identd, that's part of the RFC, I believe, so it's not something mIRC can change the name of just to make it more clear. It's not something that usually needs to be changed, but there's nothing wrong with it being there for those who want it changed.
If people don't know what a setting is, they can easily check the help file or ask. There's no reason why anyone should remain confused about settings if they take the time to do so. I don't see any reason to remove them.
