Well, an MK crossover with the Witcher could be really cool. Geralt could find himself in the MK world, having to use his monster - hunting skills against the likes of Mileena and Baraka. The Witcher's magic and swordsmanship combined with the brutal and magical world of MK would offer a lot of creative potential for a fanfiction writer.
Begin by brainstorming the crossovers that would make an interesting story. For instance, if it's MK and the Lord of the Rings. Consider how the MK characters would fit into Middle - earth. The Orcs in LOTR could be compared to some of the MK villains. Once you've got your crossover concept, create a character arc for at least one of the main characters. If it's Scorpion in Middle - earth, he could start as an outsider and gradually find his place in the fight against Sauron. Then start writing from the perspective of that character's journey.
Well, the canon status of MK comics isn't straightforward. It might be canon within certain story arcs or universes, but not across the board. Different interpretations and continuities can come into play.
The length of the MK9 story varies depending on how quickly you progress and explore all the elements. But on average, it can take several hours to complete the main storyline.
Well, the duration of the MK11 story depends on your playing style and how much you explore. Generally, it could take anywhere from 8 to 10 hours to finish the main storylines.