There are currently only so many fields we can use, Steven. But we WikiTreers are a greedy bunch and want more - for accuracy's sake, of course!
Jean, like many other members, would like to see fields added for baptism/christening and burial dates and locations; and additional name fields would be useful, too.
Alas, it's mainly a money thing, so maybe someday we will be able to add additional fields to satiate our insatiable data-field greed!!