Raju Hirani movies don't have big roles for actresses. They're always playing either a love interest and/or a plot device while the story revolves around the male protagonist.
Anushka Sharma in PK got the best role as an actress in a Hirani movie and even that movie revolved completely around Aamir Khan.
If Raju Hirani ever made a women oriented film, then on what subject you would like it to be?
He always makes light-hearted comic satires, so keep that in mind. The subject shouldn't be too dark.
If you also have a story in mind then tell that as well.
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