Well I figured the problem quite a while ago and actually made some headway into it, currently roy_d_merkel (with a little help of mine) is figuring out the rest, and we should have the sd files cracked pretty soon (there's only a few values we don't understand yet), although I'm not sure when a tool will be released to handle it.
Roy already successfully added a new icon to the campaign map, but the battles are still crashing.