I'm glad to find that I'm not the only one who admires this film. It blew me away the first time I saw it on the big screen, and it works well on DVD.
As to why Titus does some of the dim things he does (endorse Saturnine for Emperor rather than Bassianus): Titus acts according to a set of antiquated rules, rather than what makes sense. He kills Tamara's eldest son to satisfy his ancestor's spirits, despite Tamara's anguished and genuine pleas, he endorses Saturnine over the obviously better qualified Bassianus because Saturnine is the eldest son of the dead emperor, he hands over his daughter to Saturnine despite her established engagement to Bassianus, and so on. His problems all stem from his blind obedience to these rules.
Love me some Titus. Fast, exciting, inventive. One of the best acted films of recent years. And American Beauty won the Oscars that year, while Titus got a mere Costume nomination. Further evidence of the stupidity of the Academy.
"If they can get you asking the wrong questions, they don't have to worry about the answers." Thomas Pynchon, GRAVITY'S RAINBOW
"Reality is that which, when you stop believing in it, doesn't go away." Philip K. Dick
My blog: http://www.roscoewrites.blogspot.com/