It can be quite important. It might set up future plotlines or introduce new characters. For instance, it could be the start of a new arc for a character like Qi'ra.
The post - credit scene is very important as it can expand the Solo story. It could give hints about the future of the galaxy, like the rise of a new criminal syndicate. It also helps to keep the audience engaged and excited for more Star Wars content. Imagine if it showed a connection to the main Star Wars saga that we hadn't thought of before, it would really make people talk and anticipate the next installment.
Well, it's important in terms of building anticipation and continuity. It can be a bridge to other Star Wars stories. If in the post - credit scene, we see a character getting a message from a known Jedi or Sith, it would open up a whole new world of possibilities. It might also be a way to tie up loose ends from the Solo movie in a more subtle way, like showing what happened to a certain character's family or how a deal affected the underworld in the long run.