I’m not too studied-up on CORS, but I know what it’s there for. Currently there’s a number of things that are not possible to do because our generator is on a different subdomain than other generators or iframes, etc. etc. and even the top-level page we’re actually on.
With that allowed (I think CORS can allow this), there’s a lot more customisation we can do of things like t2i image iframes and gallery iframes, reading/changing the top-level url, etc. Maybe that’s something you don’t want to allow, but I for one have wanted to do these things for completely benign legit reasons multiple times.
To help me understand, can you give an example of what you’re trying to achieve? Note there’s perchance.org/super-fetch-plugin which can bypass CORS if you’re just trying to fetch a cross-origin resource that doesn’t have the appropriate CORS headers.