What he has improved a lot was his error prone nature. H was simply too error prone. He is not the most elegant defender there is..in fact he still looks like a retard when doing his things... but he has learned to anticipate well plays...improved his tackles and knows how to exploit his ball passing skills.That coupled with minimizing his errors substantially has helped him a lot.
His weak point continue being 1v1s on counters and freekicks/corner situations, but luckily we defend as a unit and can cover up this.
Agreed, Hyde. He used to be more prone to making the type of errors that would tend to show up on the score board. That was the killer, even in games where he was playing fairly well, he'd make a mistake that would end up in the net. His focus has improved a lot, and he's not making as many mental mistakes, he's not hesitating nearly as often. Read and react, less active thinking in between. A combination of improved understanding, and confidence.
I think you can point to just about any area of his game, and say that he's improved a fair bit over the past four years, although I think you nailed his weaker points. Generally, though, he's pretty dialled in these days, knows where he needs to be, and plays with an emotional edge. He's made a concerted effort to provide leadership, which is always nice to see... the guy really loves this club.
Gotta love how well the boys in our defensive unit compliment each other, everyone brings a different style to the backline. Definitely a huge reason why the group is so effective (beyond the fact that they're all well above average defenders, they have the best goalkeeper of all time behind them, and effectively the entire group actively supports them).