Next Update for Itunes. (Add Key Column for Djs)

Suggestion if it is possible to add key column on Itunes for djs that integrate with third party apps like Serato, Traktor & Mixed in Key. This would help us out a lot for people that import there playlist from Itunes and that want to mix in key. I've noticed there is no key column on Itunes. So hopefully you guys can consider this on the next update. So other apps can do some changes with there software instead of having the key in the comments section.