Yes. Yes. Yes. What everyone else is saying!
+100
I spent longer getting the audio and video into Final Cut, realigning, resetting levels, etc. then I did actually composing a quick 2 minute demo soundtrack for a trailer in Nuendo 8m last week.
Doesn’t need to be distribution ready but a lot of times I will quickly dump a video clip into Nuendo, offset it in time, and then improv a quick sound track with intro/outro sections for a demo or a pitch. This means my start times are not aligned between the a mixed down audio and video section.
Essentially what we need is a non-realtime render, without the flicker, of the video playback window.
Please, please, please.