Please describe your idea or feature and when it would be useful.
Currently Hekili makes a new profile for every other character when logged in, but it would actually be more convenient if it managed configurations in a single setting if the player has any alt.
This only need line 63 in core.lua to be changed

function Hekili:OnInitialize()
    self.DB = LibStub( "AceDB-3.0" ):New( "HekiliDB", self:GetDefaults() , true)

like above.

Also see Curseforge authors post which discusses this topic

This is not unreasonable at all, and Shadowlands would be a good time to make this shift.

This is going in the next alpha build.