How about a master grand theming software?

I know I can pick each theme for each of the individual Stardock apps, but this could take some time and effort. I have an idea to make it much easier. With this master grand theming app, I could select the grand theme I wanted, for eg. Win XP. This app would check which Stardock apps and their themes I have installed, check each for the Win XP theme, maybe check and download from Wincustomise for the ones I am missing, then activate them. Presto ... my computer would now look like Win XP. (for any questions, a dialogue box would popup for decisions and permissions).

Another idea is in the settings, I could pre-select the apps I have, the theme for each, then name and save this overall theme. So, one day depending on my mood, I could choose Vista, or Win 11, or macOS, or any combination I find appealing that I could then select with a button or from a down-drop list.

What do you think?