Would adding a last login date to your block list help you manage it?

I understand that SW has a limit on users' block lists. I also understand that this max is in the vicinity of 500. On EP, I would have maxed that out inside of a year, making EP not-worth-my-while. I further have heard some scuttlebutt that the reason for this that large block lists would strain the servers. Fair enough.
But I have a suggestion that would work for a lot of us. It's my feeling that the overwhelming majority of EPpers on my block lists were fly-by-night trolls, who signed up, did whatever it took to get on my block list, and about a week later, logged in for the last time (or changed accounts). This would mean I didn't have to let my block list grow to 4 figures (seriously! I did!) if I didn't want to. If I could get a tabular listing of the last login dates those on the list, then I could have deleted the very old ones, to make room for the new ones.

So, yeah, what I'm saying is SW should list the last login dates of blockees on my block list so I can rotate the old troublemakers out to make room for the new ones (or the old troublemakers' new accounts). Sorting blockees by their last login date would be good, too. In fact, it would probably be better.

Edit: my mind is a fountain of ideas. If publishing the last login date is a privacy problem, then how about listing a date that is already public, like the date of the last "reply" or story? What if these date were kept secret, and the user could direct SW to delete whatever the oldest blockee is? Also, by capping the size of the block list, it could produce another problem: when someone's block list is maxed out, one might decide to... encourage others block one.