No, not really, but some of them have special abilities outside of their tranformations. Minako is sometimes shown to be really athletic*, Rei is psychic, Makoto is superhumanly strong even when not transformed into Sailor Jupiter and Ami is super smart. It's just Usagi that is completely useless, but she's kind of the team's Ma-Ti, right? The heart of the gang, and the only reason they're all friends. Well and for some reason only Sailor Moon's attacks can actually destroy enemies (with some exceptions), so there Ma-Ti, take that.
Sailor Moon S gives the other girls really good spotlight episodes (Makoto's is best though, I think, such a sweet episode and it showcases just how much character growth is really hidden under the silly veneer of the show - that episode has Makoto talking to Usagi about her problems and Usagi not being a complete moron about it, just imagine that happen during season one), so there's something to look forward to for you then.
Oh and yeah, Minako** and Usagi being sort of similar is one of the nice touches of Sailor Moon. While technically it's Mamoru that represents Earth (albeit not directly), it makes sense for Moon and Venus to be similar. Earth and Venus are called the twin planets or a reason.
Oh and that episode with Minako trying to help her friends was a riot. There was something super hilarious about Minako and Chibi-Usa being the worst nurses in history.
*Mini-Spoiler: It's volleyball, not basketball. The anime even references Attack No. 1 at some point and there's a chance that the name Sailor V is a reference to Sain wa V!, a volleyball manga that Naoko Takeuchi maybe read during her childhood. The timeframe would fit, the name of Sailor V, her poses, her being a volleyball player and the immense popularity of women's volleyball at the time. Not sure if that was ever officiall "confirmed" or not, but it seems reasonable enough.
**I think the manga has Minako pretending to be Princess Serenity for a while, until Usagi gets her memories back. The inconsistencies can also be kind of explained because Sailor V was written before Sailor Moon and Naoko Takeuchi created Sailor Moon supposedly because a planned anime adptation for Sailor V was requested to have a larger cast. Not sure if that really went down like that, but Sailor V was integrated into Sailor Moon and V turned into Venus.