Cyclops was never one of my favorite characters as a child. Still not a big fan of him, but due to Marsden's portrayal in the first film. I really come to notice how I should respect him more.
He's the team leader. The one that holds the group together, without him they'd crumble and fall. Sure, they have Storm to fall back on, but Storm as a leader is entirely different from Cyclops as a leader and is not the same.
He's Xavier's biggest backer. He's always there for Charles at a moment's notice. This is an element they really showcased well in X-Men, I think. Sure, he lead his team well there also, but not to the extent he should have. He was out shadowed by Wolverine. Who unlike, Cyclops, is the opposite of what an X-Man is.
Cyclops is the X-Man. He's the ultimate one in the way he holds himself in his believes of Xavier's plight. How he leads the team.
What gets me is, the lack of Marsden talk for X3. Why is the script not being written to cater to both Cyclops and Storm. This could easily be both of them's films. Storm is Jean's best friend, and Cyclops her lover/fiancee. Two of the biggest people in Jean's life. Two people whose death and resurrection will affect the most. Why not showcase this? Why not showcase how Scott and Ororo feel. Show a bond between them as leaders, leading the team tighter now that they've lost someone they both love. Show a bond between them as friends. (Something that is lacking with all the characters if you ask me. Not just these two.)