Quite easily actually, it’s no issue for my UI’s that I have on the dashboard.
That is perfectly fine to do. But consider that streamers screenspace is tight already, with everything they need to have open, which is why a dashboard widget might be optimal than a whole page, but of course some things will need a full size page
No, not without two extensions, sounds like you’d need to take the max size of a component here, or go video only.
Since you’ll probably not want to “on the fly” change from size a to size b, which’ll then conflict with extension d installed that is only 25% wide and plonked in the middle for example. (And also is not supported)
An alternative here is to not be an extension and go OBS/XSplit CLR source and not be an extension.
My Public Extension that is a video/component is tiny when closed but like 400px wide and 80% stream tall (or in the case of component mode 100% of the component height). So I reserved my “max open size”