Will it be possible to read the Android sensors using BTsense.
(see:http://www.mindsensors.com/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=197&MMN_position=33:33) in RobotC for the EV3?
(BTsense connects via Bluetooth.)
Phones and tablets have a HUGE amount of nice (and fairly fast) sensors. Some of which could be hard to get (or impossible) for the EV3.
Imagine building a bot, and (maybe velcro tape) a Android phone or small tablet to the bot. Bluetooth the Android sensors to the EV3. Instant compass, g-sensing and even more data for the bot! (A used Android phone without a phone connection would work just fine.)
Since I BELIEVE multiple Bluetooth "streams" are possible a connection to the PC could still be kept going.
(If not a Wifi connection should still work.)