Currently the Styles panel offers access to a subset of functionality like swapping style variations and viewing the Style Book.

There's opportunity to explore designs that surface additional options here such as font pairings and color palettes. The Frame paradigm could also be extended, for instance a block type it (and its states) could appear isolated in the Frame as it is being worked on. Perhaps there could be an option to view a curated grid of Frames (templates) while styling globally?

Elevating the entire Styles panel into the site editor (as explored in #50924 (comment)) is an intriguing idea worth exhausting too.