Nice job Laserschwert !
I made a compare video of you crawl, mine, the crawl of the LD and the crawl of the VHS. Here it is :
https://vimeo.com/62543934 (pass = ot.com)
What you say about the saturation that increase seems to be right and you done a very good job to recreate it. I didn't do that.
You are working with AE right ? I'm using Apple Motion and it's not so powerful as AE.