The recently used dropdowns for Find What and Change to are really helpful to re-use recent search terms. Something similar for the Find Format and Change Format options would save a lot of time.

The dropdowns could work well, but being able to dynamically (within each document/book) specify two or three to keep as buttons would be even more helpful, for the most used changes, which for me are really simple things like 'Character style: italics' (Find or Change to my predefined character style called italics).