How do you make the free cam stay parallel with the planet so you don't have to use the tilt or yaw keys all the time to watch the epicness more smoothly in replays? Sadly chrono came won't work for me after last patch. Although when it's fixed I'd like to know cuz I like watching the epic moments up close and personal! The yaw makes it to cumbersome to do this on the tiny 1v1 planets in the ladder.
There isn't a way to make the camera stay parallel with the planet, although that would be an awesome addition. Would allow for some super awesome cinematics and casts.
Unless the api changed a huge amount since I last worked with cameras, yes it would be hard. I was able to do some small tricks to control the normal camera, but we have no api hooks for the free camera.
I was wondering the same thing myself for a while. Use the debug cam instead, it does exactly what you want! CTRL-M to turn it on and off in the default config I think.