Greetings from Lithuania.
"Species Jump" was definitely the most grittiest and involving episodes in season 7 so far. Story moved forward in interesting ways, it was great so Carry and Saul sharing same scene together (like in a good old days). There was a very gritty outcome for one of the characters in this show (no spoilers), it was very dark scene.
Overall, i like season 7 so far despite that in comparison with first 4 seasons this one missed a lot of thing that made Homeland great, nevertheless "Species Jump" is a great entry in a season 7.