sorry i've been slow to get this list together - absolute madness at work :p

I would say that these are "core" garden threads/ areas:
Gamine's Solace
Garden of Roses
Garden of Fountains
Gazebo

IMO, these are secondary areas:
Beneath a willow (or some area with a willow by a pond.)
Angel Garden
Picnic area (on hilltop with a nice view, maybe)
Talon's Glade
White tree of the Valar

It's likely that there will be some new threads, and that some of the old ones will be closed at one time or another, so the map would need to be updated from time to time. Not that I expect either of you to do that, but just something to keep in mind while designing.

Thanks to both of you!
_