Lucas’ original vision included McGregor’s character ultimately taking on his Jedi Master’s name as part of his attempt to honor his mission to train Anakin. “At the end, as Obi-Wan dies and Qui-Gon defeats Darth Maul and stays with his Master as he passes away, he not only takes on his Master’s quest, but he takes on his name. Qui-Gon becomes Obi-Wan,” McCaig revealed. “That’s why when you see Alec Guinness in A New Hope, he puts his hood down and goes, ‘Obi-Wan? Now that’s a name I’ve not heard.’ Because he’s not Obi-Wan, he’s Qui-Gon
I don’t hate the idea, but it adds unnecessary confusion, so I can see why it was dropped.
Also if the plan was Jedi not being attached… that changes the future character arcs.