I have to admit, I am biased toward Ladytron. I've been following them their entire band-life and have a soft spot in my heart for them. I've only seen them get more refined and artful through the years, mostly for the better. In this concert they did a nice job of song selection, picking the most 'rocky' songs to perform - not many slow moments here, and the crowd really did like them a lot.
I know that they want to maintain their artistic integrity, but the one comment I have is I wish they would rock out just a bit more. They still have a stiff stage presence and don't connect with the crowd as much as they could. But this is their personae, and I fully respect them for staying true to their art - they are artists afterall (they were selling the prettiest concert tee I've ever seen), perhaps moreso than performers.