You are being incredibly self-contradictory here: you want stories that are about different characters we don't know - except the characters we do know you want them to tell stories about. You want original stories, except you want adaptations of stories you already like. Make a choice. You have no idea what the story will be for the Han Solo or Kenobi movies, both of which "nobody really wanted" is absolutely NOT true for as plenty of people have been requesting exactly those stories, so how can you already judge them to not be original? Simply because they include a character or two you know, which is what you've been asking for?
People requested the Kenobi movie they could see both Darth Maul and Obi Wan could face off for the last time. Now that Maul is dead canonically in the duel in rebels most people dropped off the idea of a Kenobi movie. The other reason was because we had stupid theories like Rey Kenobi which people bought into which made people want it more. Now that is off the table their is no reason to do a Kenobi movie as both Mr.Sunday Movies, Star Wars Only, and many of friends.
Also where is my self-contradictory? If your talking about me saying I "Maybe" want a Darth Vader movie then you did not read my comment. I was saying that Vader was one of the only characters you can really get away with this(maybe Boba Fett but it have to be like a bounty hunter movei with Bossk, Dengar and maybe Cad Bane). Vader is someone who has many intresting both canon and legends stories. The thing also about Vader is he is terrifying and really is one of the greatest bad guys on all time. A moive about him is possible because that gap bewteen 3-4 provides many oppotunities for creative stories. Also more people want this because of Rogue One showing what Vader can truly do. Keep in mind i put this as a "maybe" meaning i would be fine if they did it(its not a orgin film, but maybe a story that could show how ruthless and capable vader is). Han Solo is different. The Han Solo movie should not happen becuase of a few reasons.
1. Its impossible to replace Harrison Ford and not many people will be happy with how they portray him. While i am all for taking Disney taking risks i am not for them taking stupid risks. Han Solo is a character more treatable to TV Show(non-live action) or a series of books.
2. It is simply to familiar. I need new characters and keep in mind Kira(Emila Clarks Character) is the only new protagonist. Han Solo, Lando, and Chewbaca are all central characters to OT. I dont need their orgins.
3. It is predictable. We know we are going to see Han win the Falcon, we know we are going to see how Chewbaca met Han, we know we are going to see Kessel, we know we are going to see the Kessel Run, and we know we are going to see Lando, the hutts and the underworld. Nothing new can really be shown. However i will credit them on something this movie is doing right, apparently the Pyke Syndicate is going to be in the film along with Corrilean Hounds, and Mibamm. Thats a great way to win over me into seeing this moive. (but to be fair i will see star wars most of the time.)
4. Their are better alternatives such as
Bounty Hunter movie: Made up of the best of best bounty Hunters including Dengar, Bossk, and Boba Fett(this is one exception to my rule on new stories)
A Imperial Movie: We have secene small little things in the movie about the Empire, but really like how Rogue One showed us the Evil of the rebellion, this film should convey the good of the Empire.
A movie involing Mandolirians: These guys are basically spartans and with that notion comes great potential in a Mandolorian War film.
The Old Republic: Lets face it, this time needs some lore and hopefully we will see that down the line.
A Snoke Movie?: Who the hell is Snoke?
A movie about the Chiss and Thrawn: This will happen because people will evenutally ask for it.
A top gun style starfighter movie: Rogue Squadron, the 181st, or a completely new fighter unit. This would be a nice idea since space battles are always fun to watch.