So that should still work right? As long as there is a tablet that has a good keyboard stand, As a tablet, you mostly stay in the metro world and once docked you can use the keyboard/mouse. None of the metro apps I saw were not hard or non-intuiitive to use with mouse/keyboard.

For a legacy laptop, most of the work is done in the desktop anyways no matter how much Microsoft is touting the cool metro UI, I doubt the users of older laptops are going to spend much time in metro land. So that experience does not change much anyways.

So its like you do have two devices in one. Use the one which you prefer.