So a Categories idea might be a good implementation into luckperms so you can sort groups out easier per server so say you want a Category with only Staff ranks you can name that category "Staff" and put all the staff ranks into it and say you want Skyblock and Factions ranks to be seperate you can make a Category called "Skyblock Ranks" "Factions Ranks" this would be beneficial as it would allow easier editing for servers that host lots of different ranks for lots of different servers and would just be a nice organisational touch to luckperms :)

Making things alot more visually nicer and easier to work around instead of having just one giant load of ranks to look at and sort your way through

You can do this with tracks. :)
https://github.com/lucko/LuckPerms/wiki/Tracks

Tracks in a simplified sense are just lists of groups.