The the Obi-Wan show was indefinitely delayed, apparently due to concerns about the scripts. As the show is getting a rewrite, there's talk it could be whittled down to four episodes, as opposed to the original six.
Whenever an anticipated project such as this undergoes an extensive overhaul behind-the-scenes, there's always great interest in what the plan was. Word is the Obi-Wan story was too similar to The Mandalorian, with the old Jedi protecting Luke (and possibly Leia) during his exile. What wasn't revealed is who or what Obi-Wan was guarding Luke from, but now some more information has come to light. Initially, Lucasfilm was going to make another Legends character canon.
Per The Illuminerdi, the Obi-Wan show was going to feature A'Sharad Hett as a main villain. For those unfamiliar with Legends, Hett was a Jedi during the Clone Wars who survived Order 66. Following the Jedi Purge, he returned to his home planet of Tatooine and became a Tusken Raider warlord. Hett encountered Obi-Wan on the desert world when his army planned to move against the Lars homestead, and the two had a lightsaber duel.
The Mandalorian took baby steps to humanizing the Tusken Raiders, so Obi-Wan might have been able to expand that concept even further.
Now that Obi-Wan is going back to the drawing board, it's unknown if A'Sharad will still have a role. Based on what's come out about the series, it sounds like the show was going to follow a similar arc to Legends, with Hett and his fellow Tuskens threatening to attack the Lars farm. If Obi-Wan was scrapped due to close parallels with The Mandalorian, then perhaps Lucasfilm is going to take things a new direction and find a different story to tell. That'll be disappointing for those hoping to see another Legends figure make the jump to official franchise canon, but it'd be even more frustrating if Obi-Wan was a rehash of something that came before.
Source: The Illumerdi