>>283217666
>Does the SM manga have any nudity?
Kinda. It's not very explicit, but it exists to the same level as in Sailor V.
>Is Minako more interesting in the SM manga than she is in the SM anime?
General rule of thumb is that all the characters (except maybe for Usagi, Mamoru and Chibi-Usa) are less developed in the manga compared to the anime. It basically had to wrap up each story arc within a year (~12 chapters) where the anime had 40 episodes on average. That means there's much less slice-of-life, less comedy, and overall a much tighter story structure.
Manga Minako does have a few highlights though, and in contrast to the Sailor V manga and most of the anime those highlights reveal a bit more about her leadership role and paint her in a somewhat tougher light. Generally speaking, those facettes of her personality can be found across the board (in Sailor V and the anime), but the Sailor Moon manga makes them a bit more obvious.
>I feel she wasn't given a full enough personality in the anime
In that case I recommend the following episodes for a Minako-focused rewatch:
33, 42 (important backstory).
52, 65, 78 (very entertaining), 79.
92, 100, 109, 114.
133, 141, 154.
175, 192.
If you don't have that much time to invest, the digest version would be: 42, 52, 78, 100, 109, 141.