This is brought up by a chat discussion on Code Review.
The idea being, when you Vote to Close a question (and it subsequently get's closed), you get a notification when the first Vote to Reopen is cast.
This comes up because many users (on all sites) tend to downvote a question when they VTC it, and sometimes those downvotes stick (especially on high-traffic sites like SO). It would be nice if those who VTC'd (and possibly those who downvoted) get a notification informing them that the question is now in the Reopen Queue (or, perhaps just as well, on the first edit made to it by the OP).
Obviously it would be annoying if you got a notification on each edit, or each VTR, but it could fairly simple (I assume) be done so that you only get a notification on the first of either that happens.
This could have the effect of making the user feel more welcome again, as the user immediately gets more exposure when the question is opened again, and they start getting either the DV's reduced, or those DV's turned into UV's.