Hi Rob
Thanks for your reply.
I see now that you had already written the same advice as I put, so my post was perhaps a bit redundant.
My main aim for myself was to get smart playlists working again, before I need to start commuting again on Monday. I think that does seem to be working again, so I'm pretty relieved.
As for downloading podcasts from iTunes directly onto my iPhone, I see now, as you were hinting, that without the Podcasts app, it's impossible, as the whole podcasts section has disappeared from the iTunes app. So, for people who need to do that, I can see it's going to be a real pain. They'll need to run the new Podcasts app, so they'll have to sacrifice podcast playlists.
For me personally, at some future time, it WOULD be great to be able to add podcasts to playlists on my iDevices on the fly, downloading to the device directly, but for the moment, my key aim is to be able to continue with smart playlists, and if that means syncing with my computer at the end of the day, I'm used to it.