I actually agree here, in part.
I only see the following (unconvincing) reasons to not make the current close vote count public:
- To avoid excessive whining
- To possibly avoid flag-farming from visiting users. Users with <3k rep can flag to close, if the close votes were displayed some may use it to quickly determine if a question needs closing and artificially inflate flag weight
- It's useless, why is it necessary? It clogs up the view.
Note that the contents of the close dialog (along with the break up of close votes) is available via AJAX (I have a bookmarklet somewhere that can tally close votes on a site which I don't have enough reputation on).
The first two reasons seem pretty hollow to me.
Of course, there still is the following question:
Why should we show it? What's the need?
I do see a need here. A major one. Maybe not for the exact feature you propose, but for something that accomplishes the task better.
"What is acceptable for this site" is not a very clear concept, especially to newbies. I've seen people answer closed questions all the time. And then they end up disappointed that the question is closed. This is a rather bad experience, IMO. Even worse is when a question gets closed as you are halfway through writing an answer for it.
What if we showed a "Be warned, this question may get closed" dialog (using the blue callout, maybe) for questions with 2+ recent close votes. Something like:
There is a chance that this question does not follow the rules, and may get put on hold. You may want to consider waiting a while or checking if it indeed doesn't fit the rules before posting.
It may be a good idea to pepper it with links on what makes a good question/what these mystical "rules" are. Alternatively, add a link that opens a dialog which lists the currently selected close reasons (which clearly describe the post issues).