One other bit I'm working on is the nameboard scenes that were used as bumpers between episodes on the older videos. In the UK Series sets, each episode replays the main title and credits, which gets a little repetitive (especially since Series 8-12 have about a 3-minute introduction).
I started out with the Series 4 shots, of which I think I'm only missing one (the post van from "Mind That Bike"). I also fixed a 15 year-old goof that swapped the faces for two of the narrow gauge engines (try and guess):
I've also been looking at Series 1, which is an odd case because it turns out the US release (our only set) is the one with the restored film (and more consistent color, meaning an easier fix). But there's still a few scenes that need fixes from the R2 release (including an embarrassing goof that has Henry crashing into a wall and running away in "Coal").
And for the lulz, here's some mockup covers I took a few minutes to whip up (don't even think I'm planning this far ahead, although I am looking forward to tuning up the 2008 special with Pierce Brosnan):