Page creation logs have been useful in the past for non-admins trying to determine who uploaded deleted files and created deleted articles and other pages, for cross-referencing while doing New Page Patrol and processing Help Desk requests and OTRS tickets. Now, those logs are missing, and speedily deleted items are leaving no trace of their creators' identities. Please put those logs back, on all wikis.
Umm, which page creation log specificly do you mean? Can you give a url to where the log used to be?
In the upload case, we of course have special:log/upload. But in the general case, I believe we only have Special:NewPages, which only lasts for 30 days and entries get removed after deletion.
Are you sure that this log actually existed previously?
Currently this information is avaliable to people with deletedhistory rights (By going to Special:Undelete or the "Show X deleted revisions" link). I would suggest that instead of adding this feature, we just give deletedhistory right more broadly (Assuming you have consent of the wiki communities involved)