One great Crona x Soul fanfiction is 'The Bond Beyond'. It delves into how Crona and Soul's relationship develops in a more in - depth way than in the original series. It shows them learning about each other's pasts and how they grow together. Another one could be 'A Different Kind of Friendship'. This fanfiction focuses on how they start as friends but there are hints of deeper feelings emerging as they face various challenges in the world of Soul Eater.
One good crossover idea could be to have the characters from My Hero Academia attend the DWMA (Death Weapon Meister Academy) in the Soul Eater world. Imagine Deku trying to learn how to use a Death Scythe! It would be interesting to see how the different power systems interact. For example, quirks vs. the ability to turn into weapons and the use of soul wavelengths.
I think it is. The plot has depth, the action scenes are exciting, and it has a good mix of humor and drama. However, it might not be for everyone depending on personal preferences.