Video Mixing in Live: Layer and Canvas Devices

 I have a simple idea for a pair of video devices to add video mixing capabilities to Live, but I'm a Max newb, so I was wondering if anyone was already working on, or has seen something like this in the wild...
Basically, it's two devices (Layer and Canvas):
1. Layer Device
- place device on tracks with videos in the arrange (session would be cool too)
- playback of video follows timeline/transport controls (no dragging files to the Layer Device itself, the Device would just play whatever video file was playing in that track).
- allows you to set the size (x/y knobs), position (x/y knobs), cropping (top/bot/left/right knobs), and possibly blend mode (chooser: add, multiply, subtrack, etc.)
- the device outputs the video that's playing on its track to a choice of available Canvas Devices (based on whatever Canvas Devices you put on other tracks... if there were 3 Canvas Devices, the chooser would show Canvas A, Canvas B, Canvas C for example)
2. Canvas Device
- size controls (x/y knobs), and possibly keystone controls (x/y knobs for the 4 corners of the canvas)
- double click to go full screen, maybe an on/off button
- this device creates a window that you can drag to any connected display
Any thoughts on this? Anyone already working on it or seen something like this? This would really streamline my workflow! Please make it! Thanks...