The built-in Bluetooth is nice, but I already added the module to my 400XDR. The C4FM on both sides is nice and a feature I would use, but the 400 I use at home and in the vehicle will probably not be replaced for some time, as the larger screen on my 400 works better with my less than perfect eyesight.
Hideous mic you say, Yaesu has experience with that.
Since this has Bluetooth and APRS, it would be neat if one could use the Bluetooth connection for APRSDroid or a similar app on a phone or a tablet. Looks like a neat little radio, though.