Re: [New] Assassination Classroom by Matsui Yuusei
If anything happens, I agree no one will leave class E for the same reasons, but also think that some new students might even join class E. Relating back to how the students' surnames in class 3-E are based on the 47 ronin, there are still some surnames missing in that class. I've counted out 10 duplicate surnames from my last post, and there are 26 students already in the class. That leaves 11 unique surnames left to be used: Chikamatsu (近松), Tomi(no)mori (富森), Yatou/Yokoube (矢頭), Kaiga (貝賀), Ootaka (大高), Katsuta (勝田), Yokokawa (横川), and as mentioned before, Ooishi (大石), Horibe (堀部), Mase (間瀬) and Onodera (小野寺). Unless 26 students is the maximum occupancy of a class, it's not unlikely more can join, though I'm not sure if it can reach all 37.
As for who could possibly join, those two who keep harassing Nagisa come to mind. Their names were never given yet and they already seem like recurring characters the way they keep showing up here and there. Other students in the school harass the students of class 3-E too, but none of them apart from these two are as notable at the moment. It'd be an interesting addition to that class, to see them thumb their noses to it, only to actually join it in an ironic twist.
With the way Matsui had introduced the students from class 3-E, it's been emphasized that they can come from all walks of life and have different misfortunes or imperfections placed on them to emerge in this class. In fact, the rest of the school adapts to such an abnormal social environment already, it makes the students of class 3-E look like pretty normal people, people we can relate to. They're like outcasts of the outcasts, except while the latter group of outcasts may have already accepted their full potentials in comparison to the rest of society, the former group have not yet done so. I think this truly reinforces the possibility for those two students to join class 3-E. To see people WAY inside their comfort zones getting forcefully purged out would make an interesting plot point. After all, isn't that how many great storylines begin?