You know, the Toynami 1/100 had the ability to shift the backpack up or down slightly. The little hinge piece that held the backplate and the backpack together had two positions. If it was up, the backpack sat higher (good for fighter/gerwalk) and when it was down, it sat lower (good for battroid). The only problem was that it only snapped into place for one position (I think the up position). If Bandai implemented this right, it won't be a problem.