My theory as to why 1 and 2 sucked is, as someone said before, the visuals. Episodes 4,5,6 were all done in a time were computer animation lacked and was very complex. Some much time was put intom makeing these almost cheesy modals fit into the movie that these cheesy modals actually made the movie great. Also, because of the harsh visuals, plot was accented around the visuals.
Episodes 1 and 2 flawed because they were made in a time period of easy manipulation of graphics programs, you could create almost anything in computer form these days. Because of this, they put less strain on making it all fit. Thus the effort around the computer visuals deminish and it just makes it feel less like Star Wars. Almost every piece of complex props were basically done in 3d, it drains from the creativity of modalers working days apon ened to create a perfect modal the "fits" with the scene. Thus my point.
Also, on a different subject. How anakin becomes so messed up, I believe h will become mortally wounded in the fight with Obi Won; thus, he gets all meesed up, needs mounds of machine to keep him alive, and, the thing we all love, a respirator to let hime breath.
By the way, I'm not a big Star Wars buff, I'm just a buff when it comes to movies, and visual media, with great plot and visuals.
Also, as a little factoid, it's said that Lucas got help from Spielberg who is co-Director, this time throughout the entire movie; instead of several small parts.
[addsig]