Why yes, Ben. Yes, this almost smile is a clear indication that he does.

In fact, the short list is already written--he's been standing here a while contemplating. Much of it is general; there's gaps in information in many of the lower Numbers files, gaps he hasn't convinced his Ace are worth filling (although clearly, looking at this Three, some investigation is necessary). And, of course, there's also the lingering questions that the Diamonds would love to have wrapped up for themselves before the trial.