And that's the point, I think, of making choices like in the real world. Players can't be perfect at all of his skills.
You have to choose the most important skills, for you, your future, your team..
So, for some teams SB is worth it, for some teams it isn't.
I haven't researched it yet, I am busy with it ;)
Within a season or 2-3, I can give you a detailed rapport.
But, sorry for going "offtopic", about talking how important SB is. I'lll shut my mouth ;)
When I run into an invisible spider web, I instantly become a kung-fu master.