Return item_id with playlist or song profile requests

Hi, it would be a MASSIVE help if you could return the 'item_id' of a track when I make a playlist request, or alternatively a song profile request. At the moment, it's not always possible for me to know the ENID of a track, therefore I'm forced to make a separate API call for each individual track name to resolve the ENID. Being able to get the item_id when requesting a playlist could mean 90% less calls!

Thanks, Simon