Programs can also infer where you did aways from your LORs. I think it is very benificial to have LORs from your AIs (it's a less biased view than your home program). But, they kinda show your hand about the places you rotated, and therefore which types/locations of programs interest you. I posted a more complete opinion of doing all your AI's in one region is another thread
http://www.orthogate.com/index.php?name ... pic&t=1672 The bottom line is that it will likely help you in your local area, but hurt you abroad. The problem I see is that there are a hell of a lot more programs abroad than in your local area. I'm fundamentally an odds player... so I think doing all your AI's in one spot can hurt your chances (this is assuming you're not >260, AOA, Ranked No. 1, 15 JBJS pubs, blah blah... in which case you can do whatever you like without hurting yourself).