When you have characters who our skilled with Observation haki such as Luffy, Zoro, Ussop, Sanji, Jimbei and Yamato I don't think look out is necessary. You want to talk about how Carrot is shown in various panels of her seeing things from a far distances. However, you don’t acknowledge the accomplishments that Ussop did himself for being a sniper while saving members of his crew for example including Robin, the strawhats, and even Luffy. On top of that Robin's devil fruit can also sprout random body parts including her "eye" to see things from a far distance. Yamato also has a better version of suslong with her devil fruit and she is even stronger fighter who is skilled with 3 versions of haki already. According sbs 71 sanji is very skilled with observation Haki. Luffy can already use future sight to some degree and sense things around him.
Yes, it’s true carrot can get stronger and possibly get better in the future but, the point still stands were not seeing any of the strawhats helping or fighting for her own behalf. In other words where is the motivational drive directly from a strawhat for her to get stronger for the strawhats sake not just for herself. We’re not seeing Luffy really fixated on wanting her to join the crew. If Carrot is supposed, to be the "last", Oda is really doing a poor job illustrating her significance and importance within this arc which will change, the game for the straw hats moving forward. Right now, all the straw hats could end up becoming stronger after successfully defeating the flying six, the Commanders and Kaido. Granted, there are certain characters in the raid such as Ussop, Nami, and Chopper they still need room to grow . While Carrot on another hand is stuck eating grass is depending on someone else who is not a straw hat to come save her. It doesn’t really seem like she is contributing to help Luffy or the straw hats in the current situation. If she did, she would be doing her part by helping the straw hats fight against members of the flying six or possible stall Kaido. Let’s face the reality, they were two personal enemies directly towards her that could elevates her chance of joining the straw hats. Characters for example Jack and perospero come to mind. Jack is responsible for destroying her homeland and torturing her people. While perospero shut down her happy go lucky adventure. Obviously, carrot wouldn't beat these guys by herself. If one of the straw hats had to step up in order to back up her just like they did with Brook than maybe she might have had a chance. If we had seen her fight and oda had give us little bit more detail surrounding her backstory with Pedro it would raised the possibility of her joining and motivation for her to get stronger for the strawhats
Carrot stills suffers from a one-page backstory that is not elaborate to us it only shows us how she was able to obtain her gauntlets. A flashback that is very similar to countless side Characters, even in the zou flashback it wasn't centered around her as a character. In whole cake island arc she still felt like she was just there to supporting the other characters along. The only thing she showed us what minks are capable of. I don't think we hate Carrot at all. I think some of us had high expectations that carrot would be a significant character throughout wano. So far from what we have seen the way oda portrayed her has been little let down and disappointment. She lost that opportunity to be a deep character, be a big help throughout wano and the raid. Instead, she would be with the rest of the minks and having her fight completely offscreen having her other mentors deals with the problem instead of the strawhats. Even when Cat Viper was down when the moon was covered, she didn't bother to help him. I am not for momo joining the crew. At least he was able to bite Kaido and conquer his fear surrounding heights and his ptsd. Otama at least change the tied of the war by using her devil fruit. Yamato at least is showing she is holding Kaido off little longer until Luffy arrives. do. Yes, we did see carrot and wanda save Marco. Sadly we didn't see Carrot and Wando fight against perospero throughout this manga