I think that it is obvious that this dual track pad solution could be a good move for any game style which currently uses dual analog sticks (FPS and 3rd person, etc).
As others have already mentioned, it is less obvious whether this will be a good solution for platformers and fighting games. But with a bit of quick pondering I suspect it could open up a huge range of options for any developer who wants to try and step outside the normal "the player will use combinations of button presses to trigger actions".
For example, a platformer which rather than using a "tap button to trigger a small jump" and "long press button for a larger jump" we could not only see a "small up scroll = small jump" and "long up scroll = large jump" input method, but also a "slow up scroll = slower jump" and "fast up scroll = faster, more explosive jump".
Fighting games could also open up a lot of depth based on the length and speed of right hand strokes, not to mention the variety of angles and rotations which could be made.
The more I ponder it, the more I'm hopeful.
