One common theme could be the impact of his death on the other characters. For example, Twilight Sparkle, who has a close relationship with Spike, would likely experience a great deal of grief. Another theme might be how the Ponyville community as a whole copes with the loss of such an important figure. Since Spike is often involved in various tasks and interactions within the town.
I'm not aware of specific 'MLP Spike death fanfics' as they can be quite niche and often vary in quality. You could try searching on fanfic - specific websites like Fimfiction.net. They usually have a wide range of My Little Pony fanfictions and you might be able to find something related to Spike in that regard.
Twilight Sparkle would definitely be one of the main characters affected. As Spike was her assistant and friend, his death would leave a huge void in her life.
Spike MLP Fanfic is a type of fan - made literature that focuses on Spike in the context of My Little Pony. Fans write these stories for a variety of reasons. Some might be huge Spike fans and want to give him more spotlight. Others might want to explore different storylines that could have happened in the MLP world involving Spike. It can range from humorous tales where Spike gets into comical situations to more serious and emotional stories about his place in Equestria and his relationships with those around him.
No. Suicide is a very serious and heavy topic. In the context of a My Little Pony fanfic, which is often associated with a more family - friendly and positive image, this kind of theme is not appropriate. It can be disturbing and have a negative impact on readers, especially younger ones who are fans of the original series.
He could meet other dragons. Since he is a dragon himself, it would be natural for him to encounter some of his own kind during his runaway journey. They might teach him about dragon culture and traditions that he doesn't know much about.
No, it's not a very common phrase. Most common phrases in the MLP fan community are related to positive aspects like favorite characters, shipping (pairing characters), or events from the show. This phrase seems rather negative and specific, so it's not likely to be something you hear often.
Typically, in MLP Spike harem fanfiction, Spike is at the center of multiple relationships with female characters from the My Little Pony universe. There's often a focus on the dynamics between Spike and each of the mares in his 'harem'. These stories may include elements of friendship, romance, and sometimes adventure as Spike goes through different experiences with his female companions.
Spike's parents in fanfic can be important for filling in gaps in his backstory. Since the show doesn't fully explore his family origins, fanfics can create a more complete picture of where he comes from.