I would prefer the Style and Voice lists to be customizable by the user. Some brands do, or did, allow this.
That way you can set up a bank or two of your favorite styles and likewise for sounds.
I remember you can replace all Korg styles with user styles. Yamaha PSR8000 allowed customizing the Style Banks, but I believe that was the last Yammy that did it.
They giveth and they taketh away.
DonM