How many to make the new 5* featured worth it?

MarzGroove

I'm curious as to how many of the 24 champs in the new 5* featured crystal you would need to consider desirable to make it worth the 15K.

MarzGroove

For me, half (or pretty close to half) would have to be pulls that I wouldn't mind getting either because they are the new hotness or would be a duplicate.