As a character, The Bride definitely got more attention in this season
As for Circe, I agree the character was underutilised despite being in majority of the episodes. Episode 4 was her last appearance, IIRC.
Also, considering Eric’s whole arc this season, it was funny as it accomplished nothing. His reunion with The Bride was anticlimactic from Eric’s perspective. From The Bride’s perspective, it was as common as any reunion from their centuries old feud.
It’s ironic that the most reasonable and smartest character of the Task Force M (as per Waller from episode 1) met its end with what was just a bit of pushing from her teammates. I guess she was the most human among the Task Force.