I would love to have a function in Studio Pro that allows makers without styling skills to easily modify the default styling of a project, similar to the feature available in MX Studio. In MX Studio, you could simply upload a logo and then make adjustments to basic styling elements. I truly miss having access to this functionality.
I wish Mendix would get inspired by the styling possibilities you get with tools such as Webflow and Framer. This will make it a lot easier for us to build applications that are more consumer oriented.