Often, in fanfiction, 'All Hermione Wants' might explore Hermione's unfulfilled wishes. It could be about her wanting to make a greater impact on the wizarding world, for example, by changing some of the archaic laws or traditions. Or it could focus on her dreams of being more recognized for her intelligence and skills rather than just being seen as the 'clever girl'. This type of fanfiction gives the author a chance to expand on Hermione's character and her innermost thoughts and desires.
You can try searching on major fanfiction websites like Fanfiction.net or Archive of Our Own (AO3). These platforms have a vast collection of fanfictions, and you can use the search function to specifically look for 'All Hermione Wants' fanfiction.
In fanfiction, Hermione wanting revenge on Dumbledore could be due to various reasons. One possibility is that she discovers some hidden secrets about his actions that she deems unethical. For example, if she found out that Dumbledore had been using students for some greater, yet morally ambiguous plan. However, this goes against the general perception of Dumbledore in the original series. Fanfiction often takes such unexpected turns to explore different character dynamics and plotlines.
This could be a very dark and interesting fanfiction concept. Maybe Hermione has been deceived by some false information about Dumbledore, thinking he has committed unforgivable acts. Or perhaps she's under some sort of dark magic influence that makes her believe murdering him is the right thing to do. It could also be a plot device to explore the complex character of Hermione and how far she can be pushed from her normal moral compass.
The author can give him a unique backstory. For instance, he could have grown up in a difficult family situation that made him long for love and stability, which he sees in Hermione. This would make his pursuit of her more understandable. Maybe he has some special magical abilities that he uses to try and impress Hermione in a non - intrusive way, like being able to communicate with rare magical creatures. This would add depth to his character.
There might be some out there. You could start by looking on fanfiction platforms like Archive of Our Own. Just search for the relevant tags. However, this kind of pairing can be a bit of a crossover or AU (Alternate Universe) since in the original series, Remus has a relationship with Tonks, not Hermione. But fanfiction often plays with different pairings and scenarios.
One great fanfiction with this theme is 'Redemption of a Malfoy'. In it, Draco realizes his true feelings for Hermione after the war and tries to make amends for his past behavior. It shows his journey of self - discovery and how he woos Hermione back in a very believable way.
There's a fanfiction called 'Hermione and Moony: A Forbidden Friendship'. It delves deep into the relationship between them in a world where their friendship is not easily accepted. It shows how they support each other through various challenges in the wizarding world. It's quite engaging as it also brings in other familiar characters from the Harry Potter series to add more depth to the story.
One possible theme could be redemption. Snape, who has a complex past, might see Hermione as a way to redeem himself. Maybe he realizes her intelligence and potential and wants to guide her in a different way than he does with other students.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). There are a large number of Harry Potter fanfictions there, and you're likely to find some that involve Hermione and Professor Lupin. Another option is Fanfiction.net. Just use their search function and type in relevant keywords like 'Hermione Lupin' to narrow down the results.