Scratch that last comment. After playing with some settings in my other media player, all of MediaMonkey's playlists suddenly showed up in it.

I'm at MMW 1629 and MMA 113
I'm noticing that playlists still aren't written to the folder designated in the device profile, but other apps are no longer seeing the playlists.

I can second your findings on items 3 and 5. Same behavior here. I'm really curious how other players are finding the playlists, as I don't see the playlist files anywhere.

On item 2, my experience has been that the playlists are initially incomplete but eventually fill themselves out. As in, if I view the playlist immediately after the sync, it does not have all of the tracks in it, but if I come back a few hours later, it does. I'm guessing that's an Android media store refresh issue.

Some things I came across on wifi sync:
1) Initial sync attempts would keep asking me to delete files of the device (each time a smaller set), once manually deleting all files from device the sync worked.
2) Although all files synced the the single Playlist that was synced didn't contain all files in MMA.
3) Despite the option to sync Artwork to file folders disabled an embedded Artwork was saved as albumart.jpg on device. This is problematic as all files are synced to a Playlist folder (no sub-folders for Albums).
4) Several files have this albumart.jpg associated in MMA (Files that had Artwork removed due to size settings).
5) Playlist files are not synced to Playlist folder set in MMW (not sure where on device they are (maybe in DB), however other Apps can access them)

On the good side Playlist hierarchy works now, however I really dislike that unselected parent Playlists are synced (which is also inconsistent with MMW USB sync).