I would like there to be a red flag warning "Are you sure?" when making changes to a theme and publishing it to "all content that uses that theme". This additional step would make sure that the user knows this doesn't affect just this template, but would affect ALL templates and content library items that currently use this theme.

Also, the word "Publish" for saving the change is counterintuitive. Many platforms use this same word to "save" changes or make changes take effect, even for an individual document or template.

The prompt asking if we should apply it to other content would be better worded as "Publish for All content" in the workspace, or something like that.