What threw me for a loop is when I saw the flight it had 4 options available to use miles so I figured there must be multiple reward seats available but there seems to be only one seat regardless of whether it's a 12.5 saver, a 25K standard , a 25K saver first or a 50K first

You can look now as it's available again since I cancelled TPA/MSP 4/14/12 US air 6:50 am

12,500 Miles
and
$5.00

25,000 Miles
and
$5.00

25,000 Miles
and
$5.00

Mixed
Cabin
50,000 Miles
and
$5.00