This is MUCH needed. Our libraries contain already established typography and color styles that we use throughout our product and branding. Being able to link these styles with Slides presentations would GREATLY help our marketing and sales presentations look polished. The sales and marketing teams could focus more on the content and the branding and design teams can spend less time we styling everything once the presentation is done.
Yes, components in libraries are not necessarily helpful here, but color/type styles/variables are critical.