In the long term we plan to migrate many of the things that are currently using font styles to use paragraph styles. That would include tempo items. Paragraph styles provide more flexible and powerful functionality than font styles, but they also require a good deal of work to switch over existing things that use font styles to make them use paragraph styles. Had we implemented paragraph styles earlier in the development of Dorico 1.0, we would have used them from the outset, but they came relatively late and so it wasn’t practical.