Thank you for your feedback.
1. The "Shuffle Styles" changes everything except tabs with a padlock icon. You can lock settings you like and then keep shuffling.
2. Shuffle is our main product (check https://shuffle.dev/new). Until now, we have only had UI libraries we created ourselves. You can adjust them to your needs in the editor, but the UI Library Creator is a tool to create libraries we don't have.
3. Can you tell me more about this "intrusive ad"? Probably, I didn't understand it correctly.
4. UI Libraries are sets of components grouped into categories, like headers, pricing, etc. For example, you can view components of Saturn Library: https://shuffle.dev/components/all/saturn
5. Assets and Copy are last because they are not this tool's "killer feature"- Styles are. :) However, when creating a UI library, it is best to lock them at the beginning so you can focus on styles, not texts and images.
Appreciate engagement with a longer comment! Thanks