Users with 20k rep have recently received the power to cast question deletion votes without the two day delay after closing that is imposed on users with 10k rep, and these votes take immediate effect.
This poses a problem where offending users might not have time to see the comments and closing reason if questions are closed and deleted very quickly as discussed in the comments on the original 20k power thread.
Deletion by regular users---even those with 20k reputation---should not take effect until a sufficient time has passed to give the original poster a chance to see what has happened, or the original poster should be able to find and see their own deleted material.