The threat of expulsion sounded familiar to Itachi. Kakashi had been fond of them, too. He wondered whether Eraserhead really would go through with it or was just motivating them.
While his Sharingan was not going to help him at all, his overall fitness should give him a comfortable position in the middle.
His flexibility did shock everybody but Aizawa-sensei. He probably already knew from the entrance exam.
Bakugo reminded him forcefully of Deidara and Hidan. He was relieved, that that much destructive power was on the "good" side. (But Deidara had once been loyal, too. Then Itachi had forced him to be a terrorist.) At least Bakugo wasn't able to form somewhat independent beings out of his sweat or was religious. He shuddered at the image and quickly thought of something different.
There was Tokoyami-san and his "Dark Shadow". Their relationship was similar to that of a jiinchuriki to their Bijuu. (He hoped, it wasn't as strong as a Bijuu. That would be problematic.)
Overall the class had a fascinating mix of quirks. His mind went overdrive with all the possible strategies any combination of them could result in. Itachi dearly hoped their teachers were going to utilize that potential.
(But the Heroes were oddly insistent on being in the spotlight alone. The rest of the team was relegated to the title "sidekick". Even in an international terrorist organisation they had known about the value of teamwork.)
When Eraserhead at the end revealed he wouldn't expel anyone, Itachi only smiled. He felt the calculating gaze of him all the way back to the changing rooms.