A Darth is a Darth
Had Maul merely left Obi-Wan to die, and left the scene, it's possible he could have survived longer. Had he been in Episode 2, he would have had a much more spectacular fight against both Obi-Wan and Anakin. Argueably, even Yoda. Do you think it was wise to introduce Tyrannus, or should they have kept Maul?