As you know, 99% of the websites have the same logo, favicon and watermark (if any) images across their website. I think it is fair to call them "Global Images". Can you add a section in the Theme/Layout Settings of the Builder/Editor GUI where the user can set the website's Logo, Favicon and Watermark (if necessary) images? At the moment the user would have to use separate plugins to achieve that. Having it all in the Upfront Builder package would probably make the website faster and it would definitely make the user experience better.
I hope you take this into consideration.
To all members reading this: if you like the proposition, please support it so it attracts the attention of the developers.