1. Made Strauss Rossi’s love interest
I’m not a fan of romance in work in procedural show in the first place (it usually make everything cliche and boring IMO). Making it about Rossi’s romance at the last moment of her life ruined her character for me. She was much more interesting without it and I wish they focused on her own struggle with her ambition of work and life and dynamic with team (which was what she was for 5 years). I want to think it never happened. I wish they had left romance with Rossi in fan-fiction world.
2. Prentiss’s super-spy arc
If, they had planed it from the beginning, it would have made some sense. But there had been no subtext at all and it didn’t make any sense as narrative and it was clear they just made up for Paget’s exit and just not well done. (I admit the fact Prentiss is not my favorite didn’t help my understanding either).
3. Made JJ profiler and practically deny what JJ was as liaison
First, losing liaison aspect to tell lost very big part of what BAU does. Too bad. Second, I really don’t like they (the actor and writers) disrespect what JJ was for 5 years as a professional.