I have WiFi, 3D gyro/accelerometer, Bluetooth, SD card. I'd also like GPS, compass, 3G/4G, and NFC at a reasonable prices. We know what these chip(set(s)) are,

I have WiFi, 3D gyro/accelerometer, Bluetooth, SD card. I'd also like GPS, compass, 3G/4G, and NFC at a reasonable prices. We know what these chip(set(s)) are, and what they cost, and there's plenty of room in 7" tablets to leave stuffing options, so what's the optioning holdup?