Cisco Switching/Routing :: RJ45 - Getting Expanded C3KX-NM-1G Module?

A product I could have used a number of times is a expanded version of the C3KX-NM-1G device module.  To include 2 or maybe 4 more SFP ports.  From the layout behind the faceplate there is plenty of space which additional circuit boards could be placed, (which is used in the 2 port 10GB version).  I don't need the 12 port fiber switch that Cisco has, because I need a few RJ45 connection at that location, which I would then have to buy additional Fiber to coper Gbics for a few connections where the switch is at.  The reason I need something like this is I have a few locations which I get a main feed from the City fiber, then it gets sent out to a number of local buildings on my fiber.  Maybe another option is to take the 12port switch, and have an option for 6 rj45 and 6 sfp connections.