"Hard Core" had more impact on Female Hip Hop than "Ill Na Na". Females are coping Kim's (Biggie) Blueprint from that album. "Ill Na Na" was dope, don't get me wrong but it's about 4 MICS. Kim dropped a Classic. "No Time" is better than any Foxy Single. "Big Momma Thang" had mad females going in the club. "Ladies Night" brought all the females together. She even had hard joints on there for dudes like "Drugs, Spend a Little Doe". "Crush On You" was also a huge single. Kim had hit after hit. Foxy had a spark and fell off heavy after "Ill Na Na", Kim went on to drop more hot music and stay relevent for 10 years till 2005. Also the Lil Kim Promo Poster is one of the most influencial in Hip Hop, Look how many people have bitten it:
Hard Core is the Female "ILLmatic/Ready To Die" for the Impact it had on the game and how many Chicks started biting it (Not Lyrically just image and style). Literally there's Before Lil Kim and After. Before Kim, Female Emcees (Lyte, Latifah) were dressing like Dudes. Kim brought the sexiness to female Hip Hop and let Females be Females. Foxy and many other's followed suit.