Content-Type Settings

I saw it's an issue yet you talked about in a closed issues.
I open a new issue aboout it because I'm in the need of it
for a particular reason.
I'm creating in my website a feature (conten-type) for a teacher of mine: the students book their exams.
The book time expires, so this module is perfect for me.
So I set the label not like -expiration node time- but the label is -book time useful for this exam-.
Now when users is going to create other content type like forum, story and so on
always come out this label about exams booking date .

For that reason I'm here to re-ask if you forecast to implement the feature to exclude exipation time field on node-type basis.