Well... This is embarassing...
After about 6 months I finally managed to hunt down my DeusDraconus YouTube channel, which has most of my Bryce tutorials to it.
When YouTube made Google+ the compulsory bridge for Gmail and YouTube my passwords got scrambled and I couldn't get into the DeusDraconus channel – the one that hosts my Bryce tutorials. I couldn't even pass the DeusDraconus comments to a different IMAP account to see what was being done there. I finally managed to crack my own code and get into the DeusDracous channel... and found quite a few comments and subscriptions to it. This is great. But not replying to them... not-so-great.
So, many apologies to those of you who left comments and were greeted with over a year's worth of silence. I tried viewing several links left there, but the videos had either been deleted, or were caught in the same Google account purgatory that I was stranded in and have been blocked.
Suffice to say, very sorry, I've made fixes, and I'll be sure to get another vid up on Bryce animation there shortly.
... Any suggestions for a tutorial? I've been thinking about doing one on repeating sequences... or animating materials... or parenting vs groups... Or something I call the Speed Optimisation Pass, which is basically doing what you can to speed up render times... Just suggestions about moving things: Herr Wernli and Mr. Brinnen have HDRI and materials pretty well covered :) Or, if you have a animation you're stuck on, let me know and I'll use it as a project piece to teach with.