This 10 hour issue isn't an issue with airlines such as Delta which have a system in place to put in for premium trips. The problem is Spirit scheduling is disorganized and lazy group who offer 200% via a system which determines the award based on if you are the lucky (familiar?) caller.
They still don't run through a reverse list to JA as per the contract.
System is broken.
Perhaps if we stopped picking up open time some pressure would be exerted.