I agree that consoles seem to get a raw deal as far as DLC and Editing goes.
One game that was willing to get past this was Farcry2 - it had the same map editor on 360 as on PC, and it still seems to be played today.
I was surpised that we didn't get a mission editor similar to the IL-2:1946 experience. It -is- great fun being able to set up a quick dogfight, or bom,bing run, with a few mouse clicks. I don't know why this wasn't included. It would be very, very easy to do on a console. (Pick a map, choose number of enemies, choose objective type, choose number of friendlies, choose weather/daytime - randomly generate it - go play!)
Computers, after all, are masters of randomly generating stuff from blocks/tiles/databases...
I often (cynically I know) wonder if they limit the content deliberately so they reduce the lifespan of the game and make people buy their next game. IL-2 has survived (even after Ubi/maddox abandoned it) on player generated content/mission editors/etc. and that means nobody at Ubi/Maddox is making any money on it any more...
Like I said - people call me cynical - I see it as realism. :p