Not being able to control the naming of auto-filters severely limits their usability. The automatic insertion of "Auto filter by" in the parent level and "By <fieldName>" in front of every filter at the child level within an auto-filter structure takes too much space and forces a visual uniformity that confuses a user wishing to scan through and pinpoint what they want to see. It's simply bad design and prevents users from adopting and enforcing clear naming conventions. This, plus the issues mentioned in the original suggestion, I think makes providing the ability to re-name auto-filters a necessary feature.
Not being able to control the naming of auto-filters severely limits their usability. The automatic insertion of "Auto filter by" in the parent level and "By <fieldName>" in front of every filter at the child level within an auto-filter structure takes too much space and forces a visual uniformity that confuses a user wishing to scan through and pinpoint what they want to see. It's simply bad design and prevents users from adopting and enforcing clear naming conventions. This, plus the issues mentioned in the original suggestion, I think makes providing the ability to re-name auto-filters a necessary feature.