The Major said:
How about when he deliberately put on the Red Krytonite ring when he knew the danger of it?
Many fans (including myself) saw that moment as serving two purposes. It showed Clark's immaturity at that point in his life, and his desperation regarding the loss of Martha's baby (which he believed was his fault). On principle, it's not that different from an alcoholic having a relapse; they know it's wrong, but they give in anyway...just to make the pain disappear. He hasn't done anything like that in the 5 years since.
How many deaths he's been involved in and how many people learn his identity.
Most (if not all) of those deaths were unavoidable, usually because the person involved was bent on destroying Clark or those he cared for. Watch the scene between Clark & Martha at the end of "Combat"; it speaks volumes.
The lack of showing that much interest or work becoming a journalist over the seasons.
Clark did assist Chloe at the Torch in the early years. But regardless, his journalism career was always little more than an excuse for him to stay "in the know" where crime was concerned.
True but I'm talking about his personality not his power.
Clark's nobility, conviction, and selflessness have been there for many years now. He doesn't always use them to their fullest, but more often than not they win out.
What's the status of their relationship now?
Presumably, bitter enemies...since Lex vanished during the Fortress' collapse.
Hasn't Lex been MIA from the show for a while now?
Just the last 5 episodes, since "Arctic" was the Season 7 finale.
How much has they affected Clark?
Clark's friendships with Bart and Oliver have seen different aspects. He's been more of a "big brother" to Bart, whereas Oliver's more of a comrade or equal. It was Oliver who helped Clark slowly realize that his journey lies beyond the Smallville city limits.
Yes, but what has he learned form it? How has his personality evolved from those battles?
For starters, they've taught him a considerable amount about humanity, especially his own. He's had to stare evil right in the eye numerous times, not knowing what would happen...and in lots of ways, he's been the better for it.
Some would say it's still too early, since Clark's only 23 about now, and Lois is around his age. I guess it depends on how much of a purist anyone is.
A Doomsday who is nothing like his comic counterpart.
Don't sell the producers and writers short yet; they've said that by the end fo Season 8, Davis' character will closely tie right in to the familiar character, and his backstory.
He may have made some progress but was it enough considering they've had about 8 seasons over stories?
Some story elements have taken longer than I've preferred...but in the end, the show is about the journey from man to Superman, and it simply takes time. After all, they're dealing with 70 years of collective history; it can't be easy to distill that into a modern narrative.