1: GH4 and Canon C100
2: TV Commercials, Web features
1 Camera stability, especially on the z-axis as light cameras tend to tilt left to right making horizon feel uneasy. The Olympus stabilizing sensor is awesome, but I want the GH4's features.
2 Lack of a fast parafocal zoom lens with Image Stabilizing for crash zooms
3 Delay on HDMI port causes sound delays on director and other monitors.
4 Instability of HDMI ports, cables and connectors
5 HDMI signal disabled when in Slow Motion modes makes client/director monitoring impossible.
6 Lack of ND filters in the body means rigging of lens ND's which don't always work with my wider lenses.
7 Camera could use GPS, accelerometer and digital compass which would be helpful in removing Rolling shutter live in firmware.