I also have been a bit frustrated by the lack of info by the pros on the D4, but when they do come out they are generally very positive. It is indeed not perfect, but by far the best Nikon Pro camera yet, and I like Nikons by far over the Canons. I have been a Leica user for years, but thier digital Reflex 35mm sensor has been discontinued for several years, and I bought the Nikons to replace my R8DMR, although I use it still quite a bit.
Maybe when the User Guides come out on the D4, if they ever get published, will give better info on the various function options, and possible help you solve your video issues. I am not much of a video guy, but may one day try it out on the D4. Have you seen the User Guide Nikon has on their site, It may have some answers for you on the video issue you have (f4/f14).