Hi Dr. C,
Thanks, that's exactly what I'm after. Rather than rooting, I'll probably do what I did the last time: export/import settings for apps that support that, and just set up other apps step by step. It wasn't that bad last time round.
I find it kind of remarkable that Google hasn't provided a smoother migration path, though I can appreciate that migration is much more challenging in the Android world than in the closed Apple world. Still, it's hard to argue with the iPhone's migration process: back up the old phone, recover the new phone & Bob's your uncle!