I do not know if anyone is still interested in MLS stuff for PES 2012 but I have created a few of the more unique stadiums and thought I would share them with the forum that FC Pappin created to give us all the MLS rosters and kits.
As with all things there are limitations, but I tried to provide the general feeling of the stadiums as well as the backgrounds, which I feel are key, in addition to local ad boards, etc.
Dicks Sporting Goods Park (Colorado Rapids)
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/DicksSportingGoodsPark.jpg
Base Design = OFF
Field
Ground = 1
Field = 3
Image
Field = 1
Main Stand
Type = 7
Roof = Preset 7
Ceiling = Preset 7
Wall = Colorado Rapids Wall 2
Fencing 1 = Preset 11
Fencing 2 = Colorado Rapids Fence 3
Fencing 3 = Colorado Rapids Field Fence
Fencing 4 = Preset 6
Back Stand
Type = 10
Roof = Preset 7
Ceiling = Preset 7
Wall = Colorado Rapids Wall 3
Fencing 1 = Preset 11
Fencing 2 = Colorado Fence_Flag Banner 2
Fencing 3 = Preset 1
Fencing 4 = Preset 6
Left Stand
Type = 8
Roof = N/A
Ceiling = N/A
Wall = Colorado Rapids Wall 2
Fencing 1 = Colorado Rapids Field Fence
Fencing 2 = Colorado Rapids Fence
Fencing 3 = N/A
Fencing 4 = N/A
Right Stand
Type = 3
Roof = N/A
Ceiling = N/A
Wall = Colorado Rapids Wall 3
Fencing 1 = Colorado Rapids Field Fence 2
Fencing 2 = Colorado Rapids Fence
Fencing 3 = N/A
Fencing 4 = N/A
Seat Color = 15-15-15
Bench Design = 1
Background
Left Stand = Preset 2
Right Stand = Dick's Sporting Goods Background 2
Colorado Rapids Wall 2 =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/ColoradoRapidsWall2.png
Colorado Rapids Fence 3 =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/ColoradoRapidsFence3.png
Colorado Rapids Field Fence =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/ColoradoRapidsFieldFence.png
Colorado Rapids Wall 3 =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/ColoradoRapidsWall3.png
Colorado Fence Flag Banner =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/Coloradofenceforflag_banner2.png
Colorado Rapids Fence =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/ColoradoRapidsFence.png
Colorado Rapids Field Fence 2 =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/ColoradoRapidsFieldFence2.png
Right Side Background =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/DicksScoreboardBackground2.png
Since uploading and providing this information takes some time and effort I will wait to see the response to this before uploading the other stadiums I have made. In total I have
^ Dicks Sporting Goods Park
Toyota Park =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/ToyotPark.jpg
Home Depot Center =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/HomeDepotCenter.jpg
Qwest/CenturyLink Field =
http://i1176.photobucket.com/albums/x339/charlesholmes33/PES 2012/QwestField.jpg
Enjoy!