i'm too for YYYY-MM-DD, it's better to have more significant part first for sorting and other stuff. and with separators you could do some safe-check, as Lyx said.
as for appending time - it's probably a good idea, but i'm not sure other users would agree on that.
edit: Lyx, thanx for implementing that ost feature i've requested. there's a typo in your code though:
// OST-SUBCHECK
$if($strcmp($get(enable_ost),1),
$if($or(
$strstr($lower($replace(%_path%,'.',$char(),'_',' ','-',' ','\',' ')),' OST '),
$strstr($lower($replace(%album%,'.',$char(),'-',' ')),' OST ')
),$puts(albumartist,'Various Artists')
))
' OST ' should be in lowercase. thank you for your work!