[2023] Who, in your opinion, is a champion with a "high skill ceiling", but the results aren't good enough to justify the effort?

For me it is Fiora. I don't play her, but I often see people saying she is a high ceiling champ. However, I never really see a Fiora and think, "Wow that's some seriously intense stuff she just pulled off." I feel like she's a solid champ, but that there are others who do her different aspects better than she does, and with less effort.

This is all just my opinion, though. I am a filthy casual who has never been challenger, unlike apparently 95% of the members of this subreddit. So maybe I'm just a peasant who hasn't encountered a "true Fiora main" or something like that, which is a sentiment this subreddit loves to throw out there.