I'm gonna look into that, did you already put a feature request or not ?
I think it should be very much do-able, there is already some code in the module to prevent anyone without full blown admin right to get into the map module Administation Panel. I'm sure it'll be easy to add a set of permissions and have a permission setup tab(only accessible to the admin of course)
I'll look into it and post a follow up in here or the discussion thread ;-)
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The Termite 