It would be nice to have talk add-ons that work without being on an unlimited talk plan. It seems that there is a segment of customers who like this choice judging form some customer feedback over the last few months.
Can even implement this into the "Create your Plan" page under Talk options so that customers can choose to purchase limited minutes.
Its not for everyone, but it adds more flexibility for the customer to get exactly what they want. This could appeal to a currently untapped customer base who use prepaid services from the big3 or services like the 7-11 speakout. Would love to see PM grow.