I'm currently playing an Aberrant Mind sorcerer in PnP, and it is MASSIVELY overpowered compared to the other sorcerer options, so I'm not surprised it wasn't included.
Larian have shown themselves willing to buff underperforming subclaases, and I expect that will apply to storm sorcerer. But given that BG3 can only possibly include a subset of any class spell list means the Divine Soul would come with an inherent nerf. It's not much good getting access to a new class spell list when it doesn't have a great many new spells on.
Personally, Shadow sorcerer would have been my choice, but [shrug].
That is a good point. My thought is that Divine Soul Sorcerer is the easiest subclass for modders to add.
