Brackets are not working in the filename of a playlist.
If you enter
[%year%] %album%\0.00. %album%.m3uin the options of Mp3tag, it creates the folder
2011 Album Nameinstead of
 Album Name
What I miss in Mp3tag is the feature to create playlists for various folders at once.
For example if I have the following folderstructure
Artist Name |-- Album Name 1 |-- Album Name 2 |-- Album Name 3 |-- Album Name 4 |-- Album Name 5I would like to open the folder Artist Name in Mp3tag and automatically create playlists for all albums.
These playlists should be stored in a location of my choosing, which is in my case the relevant [%year%] %album%\0.00. %album%.m3u folders.
When I currently want to do this, I have to create a playlist for each album separately, so I have to select  Album Name 1 and generate a playlist for it, then I have to select  Album Name 2 and generate a playlist for it, et cetera.
I would simply like to select all folders at once, configure the required settings and then have five playlists stored in the location which I have specified for each playlist and with the name which I have specified.