But my Windows 8.1 tablet supports USB OTG, and Win10 is just Win10 on all devices (no special Windows Phone 10). So firstly, who did MS outsource OTG work to on Win8.1 if they can't do it and why not outsource to them again?
Also, assuming they don't cut USB OTG from Win 10 (which would really mess up tablets), why would it not simply just work for phones? Is there a hardware issue that prevents it?