Can they add more characters? Sure they haven't added all their character ideas into NCIS
I'll miss that friendship as that's wonderful to see. I hope that if they do replace Sonya they'll replace her with a woman & have her become friends with Gregorio. Its wonderful I think to see a gay character having a positive friendship with another woman without it being strange or having to have them possibly being attracted to each other or Gregorio hitting on Percy, ect. I'd like to continue to have something like that on the show