Having Tyler Black makes Felix Valerio expendable in a trade. Frelick makes Mitchell and Gray expendable. Agree on Eduardo Garcia with the drafting of Brown and the emergence of Cam Devanney. Same for Freddy Zamora, and for the right player Brice Turang. Jakson Reetz makes Feliciano expendable for whatever he's worth. Anyone in Carolina except Chourio and Quero.
I guess the "would really have to blow me away" are Chourio, Black, Frelick, Wiemer, and Small. Mitchell, Quero, Turang, Kelly, and Reetz would require a player with multiple years of control.