I will be so Goddamn happy if they're actually making that thing. I love modularity, and a trackball gamepad would flawlessly combine the convenience of a gamepad with the precision of a mouse. Several groups have tried to bring one to market, and studies have shown their superiority, but apparently they were too weird to get enough preorders. Hope hope hope...
That could be interesting... but I must say, the Xbox360 controller is fantastic, inexpensive, and easily integrates with a PC. Sort of a solved problem, if you will, so unless they have significant value to add, I'd hope they'd focus elsewhere.
but microsoft can simply make the xbox360 controller difficult to implement in other games (tho i don't know how they'd do that…), and would effectively stop indies from supporting it. Having a proprietary controller, but coded using an open library (akin to what the steam workshop does), might mean that it's easier to have games implement controller support that's not fragmented.
It's a standard USB HI device, you don't need any kind of MS code to use it. Changing it would make it incompatible with their existing xbox360 install base and games for windows. I guess they could stop selling the xbox360 controller, but why would they when it's making them money?