I've seen some premium WordPress themes on the internet lately that combine multiple fonts in the same product. They are usually used for headings and subheadings while conventional long text paragraphs like blog posts and descriptions tend to use sans fonts that improve reading.

I consider adding this feature a good idea to help entrepreneurs find their identity within their white label product. Although it is true that it is possible to do it through custom designs, it could be fun to experiment and get out of the common design paradigms by offering this option in the DexAppBuilder wizard.