KT3 definitely wouldn't work since it uses a different 3.10.53 kernel even it still features an i.MX6. insmod will fail with current set of usbhid kernel modules(since these were compiled with PW3 kernel source) so we don't even have proper /dev/input entry to begin with.
KT2/PW2/PW3/KV/KOA are all iMX6 with a 3.0.35 kernel, among these 5 devices, PW2 KT2 are untested rest 3 300ppi devices are confirmed to work with USB OTG.
Without KT3 I really can't do much here. On the other hand, wifi remote should work regardless hardware/OTG.
Actually I'm using wifi remote myself with a usb mouse on an openwrt router.
