well out of these you listed, but there are many more you should have put on that list,too.like:
- making a season 7
- ending BL
- letting Peyton&Lucas leave! / them not coming back
just some examples ;)

Well, from the ones listed most of them actually bought good storylines. This I just hated because we had like seven whole seasons of a Nathan basketball story, most of them boring, and then he just quits...WTF!

Many of those. But this one was just stupid, and pointless. I think Dan killing Keith was actually one of the best decisions the show has made. Sad, yes. But genius, storyline wise!

This and Nathan quitting basketball.Though they're are some which is like and some that I didn't like,all the other ones happened for a reason and I would not like any of them to be erased. As for Nathan and Brooke's dreams, now that is just a writing error. I understand that Nathan is not going to play basketball his entire life and I do like that he is now an agent I just think it was a little soon but I didn't choose this as my option because he at least is just continuing his basketball career.Brooke's dream of fashion just came to halt and I just thought it was poor writing and it could have been done better.One thing that made Brooke special was her sense of style and she built a successful business and I understand that in these current times, stuff happens when you lose what you have but from a writing standpoint..it's a part of Brooke's identity and by not showcasing anymore is kinda sloppy. Brooke Davis without her fashion...is like Haley without her music or Lucas without his writing. They go together and it's not like Brooke decided that she didn't want to do it anymore because that's different.

Though I wish Keith didn't die, that is truly one of the BEST storylines this show has ever had. They were so smart on choosing which character lives and which character dies and how all the other characters will be affected in the long run. Brilliant writing and acting on their part so I find it surprising that it is leading right now in the pick.

^I agree, I didn't see the point of them making Nathan and Brooke give up there dreams and careers.

Just pointless

And Nathan quiting , because those were the main things that MADE the characters what they are , their passions.I hate what they did to Nathan , I wished so badly he was still a basketball player(no matter where) , and Brooke just seems she earns her money for nothing , neither her and Julian are working but in the same time they live in a quite nice house.

worst decision ever, the whole show is build on the fact that Lucas wanted to marry Peyton and Nathan wanted to play in the NBA!

This was horrible..everytime I look at those scenes, I think Karen must've had a lobotomy.