In some fanfictions, Ahsoka might save the Jedi Order by uncovering a hidden conspiracy within the Senate that was targeting the Jedi. She could use her skills as a former Jedi and her unique perspective outside of the Order to expose the plot and gain support from key figures to prevent the downfall of the Jedi.
In such a story, the Jedi reader might find themselves on an adventure with Ahsoka. They could face the challenges of the Star Wars universe together, like fighting against the Sith or other dark side forces. Maybe they'll travel to different planets and encounter various alien species along the way.
One possible reason could be disillusionment. In some crossovers, she might see the Jedi Order's flaws more clearly when exposed to different cultures or ideologies from the crossover elements. For example, if it's a crossover with a more individualistic society, she may start to question the Jedi's collectivist approach.
Ahsoka's training could greatly enhance Luke's skills. She has her own unique combat and Force knowledge. For example, her experience with different forms of lightsaber combat can be passed on to Luke. This may help Luke become more versatile in battles and also deepen his understanding of the Jedi ways.
Some Jedi might be shocked. The Jedi Order has strict rules about attachments, so a kiss between two Jedi would be seen as a deviation from those rules. They might initially be disapproving, especially the more traditional Jedi.
She could have Clone Troopers as her allies. Some of them might have defected with her and believe in her innocence. They could provide military support and loyalty.
One plot idea could be Ahsoka finding herself in a parallel universe where she's considered a rogue Jedi. She has to team up with alternate versions of her friends to fight a common enemy. Maybe an ancient Sith cult has risen and they are the only ones who can stop it.
Ahsoka could face the challenge of time. If there is a ticking clock situation where the Jedi Order is about to be destroyed very soon, she has to act fast. And she may not have all the resources she needs. She might need to gather allies, information, and power, but there could be limitations. For example, some Jedi secrets might be lost, and she has to figure out things on her own without the full knowledge of the Jedi traditions, which can slow down her efforts to save the Order.
One possible reason in the fanfic could be her disillusionment with the Jedi Council. Maybe she saw too many of their political games and felt they were straying from the true Jedi path. For example, she might have witnessed them making decisions based on power rather than justice.
Well, a great plot might involve Ahsoka traveling through time. Maybe she gets sent back to the days of the Old Republic and has to interact with the great Jedi Masters of that era. She could learn new forms of lightsaber combat or ancient Jedi wisdom that she then brings back to her own time to use against a new enemy. Also, she could face a moral dilemma where she has to choose between following the traditional Jedi Code or her own instincts when dealing with a new type of enemy that the Code doesn't quite cover.