I like this idea.
Instead of taking up the entire loading screen, therefore rendering the map image behind obselete, destroying the purpose for which it was designed, make it so one snapshot appears in a corner, which can be decided by the server owner and/or Super Admins. That way the map image wouldn't be overlayed completely, and the picture could have options to set where it will appear on the loading screen (see crappy diagram with 16 places marked X)
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/support x3.141592