Kim wasn't on season four.
Like I said, I know she did computer stuff, but I don't think she was ever at the level of Chloe and Edgar.
I think they'll pull her in because she does know the CTU protocols (*drink*) but I also think it leaves an opening to bring Spenser back in.
It's just speculation.
I get mixed up. I watched Seasons 1-5 (I think) all at once this year.
It would be neat if Spenser came back.