One thing I think I’d get use out of is a simple video layout controller: Basically something that can quickly specify where each video track will show up on screen. Right now I’m getting around this by Syphoning everything over to Resolume, then visually arranging where I want my tracks to appear on the screen. Without sending it to Resolume, it’s really hard to see each individual clip when they are all layered full-screen on top of one another. (I’m sampling lots of old footage, and not working with masks or alpha channels.)
I remember the early video sampler app “Vjamm” had a simple interface where you could very quickly assign each track or clip to one of the 4 corners of the screen at 1/2 size, or make it full screen. The excellent iPad video sampler “vidibox” solved it a different way: The screen would smartly auto-subdivide to support how many clips were playing at one time.
I know a feature like this will never make everyone happy, but it would help people without Syphon skillz to do more interesting layouts with their clips.