What is the proposed idea/solution?

...Enable Arrayunique to be used on text fields with spaces

How does is solve the user problems?

we cannot use Rollup to retrieve just the unique values when the field is a concatenated field with spaces. If this was addressed, then a rollup with arrayunique(values) can be used on concatenated fields (most primary key fields are concatenated)

How was this validated?

...Tried it on a text field with spaces and it did not work. 

Who is the target audience?

...Creators