Ooooh yes, this fic was a great deal of fun! I really enjoyed following it as WIP, though of course that meant that since it went on for so long I kind of lost track of some details, so I can't really talk characterization with you.... But the competence was great, and I loved the relationships between Carlos and the scientists, and all that. It made me happy every time I got an AO3 notification of an update. I'm sad it's done; I was kind of feeling for a while like it would never be done!