@K.:
The only sort of lookout that I imagine Oda placing would be someone plot relevant and with skills akin or close to Viola's.
Someone who can actually see from miles away, possesses X-ray vision to look into people's souls, and can make giant whales from their eyeballs? Why yes, that would be the one way to make lookout interesting.
–- Update From New Post Merge ---
@fapfapfap:
She never seems to get any praise for the fact that she managed to disable an enemy Yonko fleet,
Because she can only do that once a month, CHopper was about to do the same thing, Brook DID do the same thing, had Sanji been there he would have crossed the same distances, and had Luffy, Zoro, Franky or Usopp been there they would have more readily dealt with the problem with their skill sets. We've see Zoro is capable of casually slicing ships in half from a distance now, and Usopp has his long distance gunnery skills. Even Robin who isn't really a fighter could also make a clone on their ships to wreck their steering and… scout the enemy..
And then, after Carrot did her thing, she was immediately asked if the leaders of Zou could do the same thing, and then she was unconscious for the next twenty chapters while the rest of the crew held off Big Mom. Like Brook running on water and cutting her minions in half while asking to see her panties, Nami summoning a giant lightning bolt and stealing one of her minions away entirely, Chopper turning Monster Point to fight, Jinbe just straight up punching her away, Sanji making a giant super cake that saved the entire kingdom from Mom's rampage, and had their times to shine. Including Jinbe's big wave riding THIS IS WHAT A HELMSMAN CAN DO chapter.
She did a cool thing, sure. For one chapter out of the 100 she's been in. Germa did a similar cool thing multiple times, and they are assholes. One of them saved Luffy from poison at the start of the arc, and they had cool warrior suits complete with sentai transformation sequence, and they took out a ton of mooks themselves and also saved everyone including Luffy and Sanji. And what about Bege? WHo turned into a giant castle and withheld Mom's attacks, protected his entire crew, had the plan to defeat BM, had a lot of cute moments with his kid, and delivered the cake that was desperately needed to distract Big Mom? Brulee who was one of the enemy helped out immeasurably with her mirror teleports. Even Ceaser contributed in places, and he has no loyalty at all. Hell, even Katakuri, who was fighting Luffy to the death for a dozen chapters, helped out by refusing to let others also fight Luffy and by not using his full power until after Luffy had adjusted to it.
So yes, she did a cool thing.... while everyone else was also doing cool things and half the crew was missing.
But it was not a unique thing, ( Pekoms did the same cool thing to help Luffy escape an impossible situation and sacrificed himself. ) and we will be seeing many others do it in this very next arc. At the very very least we'll be seeing the two leaders do it, and I'll be amazed if we don't also get Sulong form Wanda, and I have to imagine we'll be seeing many many more than just that doing it.