I think a lot of what you are describing as “tedious” is what many of us call editing. 🙂
You as for graphic workflows, you may want to consider reversing your process. Edit the video in Avid, output it as a full res quicktime, and bring that into After effects.
Within After effects you could create a pre comp that is the source file, and a master comp with the “light color correction” and the fades built onto it.
I would probably keep the titles as a final comp so they can all be saved out and archived for change purposes.
Then it would simply be a matter of using the first comp in the second comp, and the second comp in your
your graphics comp. render it out, and then change the source footage in the first comp, repeat the procedure.
Note that you can’t use this method (very easily) for a batch process, as i believe duplicating the comps will not give you the ability to have different base layers.
In other words, if you duplicate the final comp 6 times, and then try to change the base layer video in 1 of them, it will change all 6 automatically, so you can only do 1 video at a time with this method, but it gets rid of having to do all those pesky fade to blacks.
Glenn