sorry but there are other smartphones besides apples.
And the fact that they wont "approve" innovative apps tells me I would never want one.
Remember jail breaking is legal due to federal court decision so what apple whats is not really much of a barrier, and there are alternate app stores, even for android!!
<shrug> religious rants aside,
there is no point of using Bluetooth when both devices are already connected to the same LAN. BT is not inherently faster or anything, it is just a cheaper way to produce hardware without demanding wifi capabilities. But smart phones already have tcp/ip connectivity. Presumably BT should use less energy but the speed with which Roku's BT remote goes through batteries questions the wisdom of that. Communicating over sockets is well-developed, compared to that talking in BT is exotics.
So? Roku just has to provide way of pushing accelerometer data over tcp/ip, and we can build remote apps for your favorite iOS/Android/WindowsPhone/webOS/Nokia/<insert-your-favorite-dead-OS-here>.