Canon listened to its users and responded with a camera that is a good fit for most professional video shooters. The Canon C200 is a solid camera that is up to par with all other cameras in its category.
If you are looking for a mic for your smartphone, or even one for your camera, you should consider the Samson Go Mic Mobile. It's an affordable yet versatile tool that will improve your audio regardless of what you are shooting on.
The COMPACT-SERVO 70-200 T4.4 is the same form factor as the 18-80mm and is also for a Super 35 image sensor. Since the 70-200mm focal length is widely used, this, along with the 18-80mm, completes most users field of view needs.