"Right" and "wrong" only exist in the context of the character and their options though. So if a character doesn't have the tools to do approach X then it was a mistake on your part to try it, and you should try something else.
For example, trying to rush down immediately with Hakumen isn't as good as doing it with Ragna because you have to wait for stars before you can do anything. All I need is throw though.
You're right though that it can still reveal character flaws since you'll see what they are lacking.