It's possible to add a column with the date of last spending tx?
Would be nice to identify the dormant addresses.
Someone asked a similar question by PM a couple weeks ago. This was my response:
I like the idea, and I could probably get it from this data:
But it's a bit more work than I currently want to do for this, especially because "inputs" doesn't show input addresses, so it takes some additional steps.
If you do get the data out of this, please post it on Bitcointalk

I could offer this as a (paid) service if you really want it, in that case make me an offer.
Out of curiosity: why do you need dormant addressess? If you're trying to brute-force private keys, does it really matter if they're long-term hodlers (or forgotten)?