I know there is some crossover with volumes five of More Than Meets the Eye and Robots in Disguise, but I'm just reading all of those, especially since I particularly like some of these issues.
In particular, issue 18 of RiD is from Arcee's point of view, and you get a far more nuanced and sympathetic look at her character than you've gotten before. At some point, she goes from someone who had a gender transition forced upon her and was simply angry, and portrayed as insane, to someone who was trying to be a better version of herself, and trying to connect with others. It may have started before here - I suspect it did - but you don't see it. It starts showing here. However, she had to be watching Bee, and how others reacted to him, to come up with the thoughts on how others saw him and on how she felt about him. This didn't happen spontaneously, and yet it happened off scene so it can feel like it did.
I don't know why is when she went from assassin to fully fleshed out character who - yes, was an assassin - but also became thoughtful about that aspect of her life - without fully ditching her itch to react violently to little provocation. (To be fair, she had this built in to her character. Yes, in a really offensive way, but it is part of her character in this continuity and they were making a clear point not to retcon, or go against previous continuity. That being said, the only reason I didn't knock of stars is that Barber tries to undo as much of the damage he can by really drawing her out, particularly later. Also, a lot of time this comes from on high: you have to live with horrendous decisions because you want to keep your dream job, and I get that.)
This volume is where I start to really loathe Rodimus. I say start, but that's not true: I've loathed him for a while. But this turns into a visceral rage that Arcee and I could talk about over some Energon. I mean, like she would understand the depth of my rage at him. Then again, she spent years killing Jhiaxus, watching him come back to life, and killing him again - and I wish it were Rodimus she were killing over and over again...
The lives she would save! Just think of all the lives she'd save!
Bad, bad shit goes down in More Than Meets the Eye. It's Rodimus' fault. It always is. He just lets Drift metaphorically fall on his great sword for him and fuck you Rodimus. Drift would make a way better captain, even if he captained on his feels. And he totally would!