User attributes deprecated for ECE and SPLUS

We seems to have deprecated user attributes categories like Business, Personal, Miscellaneous and Custom for 12.6 and SPLUS. Currently we have customer requesting to use these feature.
Can someone confirm whether we can raise it as feature enhancement since they have been deprecated and we do have user custom attribute category?

What is the business use case for using those attributes and why can’t existing attributes be used? This has been deprecated from the baseline and will need to be reviewed by the base product manager to bring it back if there is a valid use case. AT the moment, there are no plans to revert it.