I actually hope that LEGO accentuates this factor a little more. Despite my own love for LEGO, I have to admit that LEGO hasn't emphasized girl minifigures and sets all that much. Personally, I'd be really happy if Lego introduced some heroine minifigures (who aren't just princesses waiting to be rescued) into the Castle universe. Essentially, someone like Brienne from Game of Thrones except, you know, tailored towards LEGO's kid audience.
After all, I'm fairly certain that girls would become more interested in Castle and other such sets if girls were portrayed as heroes, and not just damsels in need of rescuing.