Cracker, some of my earliest posts are about the bluetooth keyboard back when FW 2.x was all the rage. I haven't heard or seen anything new about bluetooth touchscreen controllers. I personally only use BT for... well... nothing. I've only used bluetooth on my iPhone for tethering, but since I usually have a cable handy, I'd rather have the 200kb/s connection than the painfully slow BT tethering connection. So as for those previous worried about losing hands free and stereo BT headphones... I think that's a loss most anyone would be willing to sacrifice. plus, would you really be surfing the internet on your external touchscreen, talking hands free, and driving at the same time? And how often would you be doing this. Not only that, but if you are going to plug your phone into your car so it has power, you might as well just enable the hardwired stereo though the dock connector anyway and not fiddle with Stereo BT.
BugByte said he has a bluetooth touchscreen controller in a previous post. Can we have make/model/info about that? I think this could be a key. Otherwise, we are seeing many keyboard controllers (such as that musical keyboard) that are sending signals INTO the iPhone. I don't think we have to go to kernel level to get that fixed.
As for bebopblues, got any input? Can't be disappointed if you aren't submitting input.