User blog comment:PresidentEden78/Medal of Honor Warfighter Trailer unveils Battlefield 4, but is it too soon?/@comment-5112042-20120722181302/@comment-3479148-20120722182025

They didn't release modding tools under the assumption that it would be "too difficult" for modders to use them, but probably so they could keep releasing DLC as the only way to get new maps. EA is to blame here, and I doubt they're going to change now. Especially with Premium being such a success.