I support this task because important messages like AfC notice and blocked account warnings are getting squished and people may dismiss them as a whole.

Examples are from Thai Wikipedia
2010 Wikieditor

Another quick mock up

Another point why this should be considered: if the page was previously deleted, in VE that is currently invisible because of how the modal is structured:
https://ru.wikipedia.org/w/index.php?title=Aeronautica_Nazionale_Repubblicana&action=edit&redlink=1

VE team should really think about how their unconventional edit notice design impacts things.

@stjn assuming it would be accurate for me to understand this request as an effort to increase the likelihood that people who are in the midst of an edit are likely to see and "internalize" the information that is currently presented within Edit Notices, can you please share, from your experience, what you think are the most important messages/pieces of information people who are new need to know about?

Well, usually it would go:

1. notices about previous deletions, since it usually means that people have to be cautious around not creating the same thing
2. edit notices related to the actual page or namespace, like MediaWiki:Editnotice-0-Page_name or MediaWiki:Editnotice-0, or BLP edit notices
3. generic edit notices like ‘you are creating a new article’, ‘please remember that copyright exists’

In standard wikitext-based edit form these are done the other way around either because of negligence or because you are more likely to read something that is located near the edit box. I think that’s how I think about this information, but I can invite other people into this discussion for a more representative sample.

Forgot another good point: ‘You are not logged in’ notices should be as prominent as they can anywhere (if anything, they're not as prominent as they should be), as it leads to editors sometimes logging out as a mistake and leaking their personal data.

Currently it looks like a regular old unimportant notice in VE, which is confounding: