I wonder if Eri will be use as an excuse to erase the injuries of Deku and having like 2-3 giant punch left. Heck I even wonder if the author remember that plot point.
@Count:
Same. She suffers from heavy Green Lantern-ism. Her only limitation is how many chemical formulas she knows, but that means virtually nothing when she just summoned a cannon with infrared goggles and she is already the smartest person in the class (probably in the whole school for all we know lol). A mass weakness could work. And/or maybe delving into how she only knows certain elements/compounds well, but you would have to delve into that ahead of time. And/or if the items she makes have a time limit before they break down (but time limits in comics suck since the author can shorten and extend that however they please). And/or if she could only make a certain quantity of items.
Her only limit seems to be physical and psychological weaknesses. Which are good, but easily complement a power as versatile as this.
At least green lantern only makes constructs. She can make anything with the actual properties.
–- Update From New Post Merge ---
I have a real problem with how the author write the powers of the kids. They are to great at it and leave little room for improvement. It was fine when it was Bakougo and Shoto only(and even then I think Shoto started to op) but now it seems he went ahead and gave them power-ups they should grown into after maybe 1-2 years in school. As it stands they pretty much all have the level of handle you would expect from pros except that they are lower than like the top 10 of the whole countries.
The vine girl had to much range, the beast boy has to much power. Ever since that arc started I can't help but feel that the author put them all at a level were it just makes no sense for hero schooling to take 3 years. It seems everytime he thinks of a nice improvement he shove it to them in the next week or month in-universe. The pacing of their growth is way to fast.
I also hate the handling of Girl-of-holding. This chapter just broke it. She not only prove that she can just decide to let a thing be part of her body rather than being forced to drop it(the ropes) but also by producing so many things incuding specially design glasses that were preloaded in her canon in a bag. She pretty much establish that she can do everything except if the author randomly decide she can't. Time shouldn't matter she did the 4-5 items pretty quick, mass doesn't matter she made a giant cannon, stamina doesn't matter she made so many things and was fine, even spatial awareness doesn't matter since she not only keep them stuck to her body(rope) but she pre arranged them in her body(the items being in a bag). And I say that she never should have been able to make a tracker and receiver because it makes any trouble making a complicated item bullshit.
Also for the whole class A should be better. I think their experience made them learn to fend for themselves not so much learn to cooperate. Except for deku but that's because that was always his style. That and think actually working on teamwork is better than meeting random villain and fighting to survive number 10. However I can agree that they should individually be able to think quick on their feet because that's what they had to constantly do to survive.