In my opinion, it's pretty good. The comic adaptation of 'Heir to the Empire' stays true to the main plot and keeps the essence of the original work. However, there are a few minor details that could have been handled better.
One key feature is the continuation of the Star Wars story. It delves deeper into the post - original trilogy universe. It introduces new characters like Grand Admiral Thrawn, who is a very intelligent and strategic villain. The novels also explore the political situation in the galaxy after the fall of the Empire.
Grand Admiral Thrawn is one of the main characters. He is a brilliant military strategist for the remnants of the Empire. Luke Skywalker also plays a major role as he continues his journey in the Force. Princess Leia is there too, dealing with political matters in the new galactic situation.
The 'Star Wars Heir to the Empire Graphic Novel' is an expansion of the Star Wars story in a graphic form. It could be about the search for a new heir to the Empire that was once ruled by the Sith. It may show the political intrigue, the epic space battles, and how different species interact in the Star Wars cosmos. There could be Jedi trying to stop the rise of a new dark power, and heroes and villains with their own motives and agendas.
I'm not entirely sure, but it could include some classic Star Wars characters like Luke Skywalker, who might be involved in dealing with the threat of a new heir to the Empire. There may also be new characters created specifically for this graphic novel story.
One plot idea could be Luke struggling to balance the dark and light sides within him due to his new position as heir to the Empire. He might face internal conflicts as he tries to reform the Empire from within. Another could be him having to deal with former Rebel allies who now see him as a traitor. And perhaps he discovers a hidden power within the Empire that could either save or destroy the galaxy.
His relationship with Leia would be severely strained. She would likely be horrified that Luke has become heir to the Empire. Han might be more understanding, thinking that Luke has a plan to change things from the inside. His relationship with the Jedi spirits could also change, as they might be conflicted about whether to support him or not in his new role.