It's very possible they tried rehearsing it in the studio version's key and realized it was too difficult to consistently perform live that way. While bands tend to mostly stick with the original key of songs when performing them live, there are plenty of songs from plenty of bands that have only ever been performed live in a different key for one reason or another.
I feel like this doesn't translate very well live at all. Hopefully it improves with time as it's played more, but the dynamic vocals from the studio version are sorely missed here and it comes out really flat as a result.
I've always thought it was possible that Mike planned the release of Already Over when things were still somewhat up in the air about Linkin Park's future. But then I think that by the time the song actually released, they knew Linkin Park was coming back since that was around the time Emily officially joined the band, right? I don't think it was originally planned as a decoy, but it worked out nicely to be one.
It's not just foreigner things. I've been to a show in Tinley Park, IL where every band addressed the crowd as Chicago. The big city is typically the one bands refer to when playing in a suburb.
I love RTN in the set. I wouldn't mind some rotation on that part of the set though. Either different verses worked in or entirely different songs would be cool.
Two months later, I still absolutely love this album. The Emptiness Machine is easily one of my favorite songs the band has ever done, and Overflow and Casualty show two opposite sides of the band that I love so much. I'm so glad we not only got a new Linkin Park album, but we got one that kicks this much ass. I still get choked up from time to time thinking about Mike's "it's good to see you again" at the comeback show. This band means so damn much to me. It's been full go since that show four months ago and I don't ever want to get off this ride.
Back when it released, there was a lot of backlash from existing fans around the lack of rapping and other numetal elements. It was still undoubtedly successful, but it passed off a lot of fans.
Source: I've been a fan since 2000 and have been a part of the larger fan community since 2005/2006. I personally know several people who completely stopped listening to Linkin Park after Minutes to Midnight released.