Redirect in merged files instead of pure deletion?

[TobiasBg]

Just a quick though that crossed my mind:

With the recent merging of files into other files, due to the Custom Post Typoes support (i.e. [12708], [12702] and more from #9674), several files like page.php, page-new.php have been deleted.

This could potentially break backward compatibility for some plugins that link to these files (i.e. a plugin that has a link to "create a new page").

My suggestion: Instead of plain deleting them, they could be reduced to something like a PHP redirect (header()) to the correct new page (with passed parameters from the query string conserved).
I.e. page.php could contain a header redirect to post.php?post_type=page(+rest of query string).)

At the same time the redirect should be marked as deprecated, so that noboby will set new links to it, but use the correct new file.

[ryan]

We can add them later if needed. Right now I want to see what breaks with them removed.

[ryan]

We could also introduce get_add/create_post_link() to compliment get_edit_post_link().

[TobiasBg]

Good enough for me then.
Some 404s by old plugins are not worth the trouble and overhead.