I can only see them going down the touchscreen road if it is easy to use. Just throwing a touchscreen on a Wiimote wouldn't make things easier. The Wiimote is easy to use because people are used to TV remotes. They are not used to TV remotes with touchscreens, though.
Now if the touch surface can simulate button clicks and haptics then that could be awesome. I hope it won't just look like a screen, though. They could use something like e-ink that looks like a normal surface to make it feel more natural. If they can pull that off I'm all for it. If it's just a regular touchscreen, even with haptics it would be too complicated to use. The "screen" / touch surface has to look skin to the rest of the Wiimote or people will be confused.







