Calvin sums it up for me:
http://writeradept.blogspot.com/2013/03/ive-almost-started.html
The writer is also not too far off the mark.
In short, I've just upgraded my entire system and and editing software, so the previous settings which were used for the DVD (and ported to the Blu-ray) are woefully outdated, and are being rebuilt from scratch. This is a good thing, as I've found better and simpler ways to achieve the same (or better) results. For example, I've found a way to change the color of of certain gradients which were inaccessible with the original settings. However I'm happy with the look of the previous examples, so they shouldn't change too terribly much in the final version.
We're still on track to get this sorted by the end of the month, from there I'll give the ETA for the completed project.