No two men are exactly alike. Therefore what one man desires in a wife could vary from what another man desires. There are some men who don't want to get married period!
The best advice out there is "be yourself". Ultimately everyone wants to be loved and appreciated for who they are.
Trying to find out what someone (wants) in a mate so that you can behave in such a way to win them over seldom works in the long run. We tend to revert back to our "authentic selves" overtime.
It's almost a cliché to hear someone say, "He or she is not the same person I fell in love with."