This is a working implementation:

   class Class
     alias_method :__new__, :new

     def new(*args, &block)
       obj = __new__(*args, &block)
       included_modules.each do |mod|
         if mod.respond_to? :initialized
           mod.initialized(obj, *args, &block)
         end
       end
       return obj
     end
   end


   # Testing
   module A
     def self.initialized(obj, *args)
       puts "Module A"
     end
   end

   module B
     def self.initialized(obj, *args)
       puts "Module B"
     end
   end

   module C; end

   class Klass
     include A, B, C

     def initialize
       puts "Klass"
     end
   end

   Klass.new


Cheers,
Daniel