If Lucy never joined Fairy Tail, the friendships and relationships among the characters would form in a very different way. Also, many of the story arcs might not unfold as they do in the original plot.
Well, if we consider Lucy as a Dragon Slayer in fanfiction, her magic could be really different from the traditional ones. Maybe she'd have a connection to a celestial dragon, which would be so cool. It would combine her existing celestial spirit magic with the new dragon slayer powers. She could use the stars as a source of power, similar to how other dragon slayers use elements, and it would be a fresh take on her character.
You can try searching on fanfiction websites like Archive of Our Own or FanFiction.net. Just type in 'Lucy Frosch Fairy Tail' in their search bars, and you might find relevant fanfictions.
One possible fanfiction could be that Lucy is invited to a grand ball in the magical world. As she enters the ballroom, a mysterious melody starts playing. Lucy, being the confident and graceful character she is, starts to dance. Her celestial spirits watch in awe as she twirls around, her dress flowing with each movement. It could be a dance that not only showcases her beauty but also her connection to the magic within her, as she uses a bit of her magic to create a sparkling effect around her while she dances.
Another fanfic could focus on Lucy's relationship with Erza. Maybe they team up for a tournament within the Fairy Tail guild. Along the way, they face tough opponents and have to rely on each other's strengths. Lucy's strategic thinking combined with Erza's powerful combat skills would make for an exciting story.
In some fanfictions, Lucy might be portrayed as a friend to Frosch. She could be someone who looks out for the little Exceed, given her kind - hearted nature in the Fairy Tail series.
There is a fanfiction called 'Lucy in the Alternate Realm'. This one is interesting because it sends Lucy to an alternate realm where she has to find her way back. Along the way, she meets different versions of her friends and has to use her wits and magic to survive. It's a great read for any 'Fairy Tail' and Lucy fan.
Yes, there are many non - inappropriate 'Fairy Tail Lucy' fanfictions. For example, some focus on her adventures and growth within the Fairy Tail guild. They might explore her relationships with other guild members in a friendly and positive way, like her friendship with Natsu and how they support each other during quests.
I think it depends on how it's handled. If the 'naked' aspect is just a shock - value title and the actual fanfiction is more about exploring Lucy's character growth, relationships, or her adventures in a tasteful way, it could be okay. But more often than not, it gives the wrong impression and might not be suitable for the overall Fairy Tail community which values things like friendship, courage, and magic more than such potentially inappropriate themes.