NESTED GROUPS

What do you all think about a Nested Groups feature such as the one below? This would allow multiple category's and make it neater to store a lot of features.





Music (Group)



Pop (Group)



Artist 1 (Feature)

Artist 2 (Feature)

Artist 3 (Feature)

Artist 4 (Feature)



Rock (Group)





Artist 1 (Feature)

Artist 2 (Feature)

Artist 3 (Feature)

Artist 4 (Feature)