I would like this, but (I am not sure if this is clear from your suggestion or not), I would like the admins to be able to choose entry-by-entry if they want to jump the queue.

That is, if I have an urgent admin-y post to make, I should be able to jump the queue without having to go into manage communities to change my setting just for the one post and then change it back. The easiest thing would be an option on the update page if I'm posting to a community I'm a mod of, but I'm not sure how much complexity that would add.

...this would also all become irrelevant if mods get the ability to post using a community/mod account; then posts from the community account could jump queue whereas mods posting from their own accounts wouldn't, and I think that'd solve the problem for everyone.