What are the pros and cons of having a CaseInsensitiveString type in Java? [closed]

Question

I'm tempted to create a final class CaseInsensitiveString implements CharSequence.

This would allow us to define variables and fields of this type, instead of using a regular String. We can also have e.g. a Map<CaseInsensitiveString, ?>, a Set<CaseInsensitiveString>, etc.

What are some of the pros and cons of this approach?