Feature Request: Folders / Groups In Lists & Segments

Adding folders or groups to segments & lists would be really helpful. 

I have lots of segments & lists, but only frequently use some of them. Starring is nice but doesn't really help. 

Some lists only get used once or twice a year, but I cannot delete them. 

Some lists that are dedicated to profile cleaning.

Some lists that are used to trigger flows that I don't need to see often. 

Some lists are just old but I want to keep them incase I want to remarket to them.

I don't trust archiving them as I need to make sure they do not get deleted.

Perhaps folders or groups could solve this or better sorting & tagging of lists & segments. 

Also for anyone who says to use tags - we have had our account for more than 5 years and the tags are full of old and deprecated tags so finding the one you want is not a very good option either.

Thanks for the consideration