I like this idea as it is non invasive to the system and enhances rp and character developement. It solves the problems of stashing loot in inappropriate encounters. I get sick of the old cliche of: oh look a previous victim of the giant spiders just happened to have 400 gp and a couple...
Well, in my game our usually by the book DM lets my feylock auto stand from prone during a teleport. For game world verisimilitude, it seems awfully minor to rotate one's self 90 degrees when defying the laws of reality with almost every round teleports. I do focus on all that with my feats...
I agree with most of you that there is no intrinsic benefit after round one for going at the top of the initiative count. Situationally it could be beneficial. Example: My feylock wants to use a power with a condition imposing combat advantage on the enemy that ends at the end of the targets...