A couple of things:
If you get a 15 day Teal Season you will be left with a 45 day regular ducks season unless the Mississippi flyway changes there position on how seasons are applied. For example Missouri can have a longer Teal season with no impact to the 60 day season.....this is dependent upon the teal forecasted number each years but for the last several they have benefited with a 15-16 day Teal Season. If I understand correctly the reason Iowa does not qualify is because it is a breeding state and considered part of the Prairie pothole region and can not qualify for the longer Teal season with no impact.
I do think that could or should be reconsidered because the only part of the State that really raises birds in North of I-80. Let the South of I-80 folks have a longer teal season. My experience is you either catch them on their migration or you don't and being locked into a set # of days in later September has not proven itself very effective for the Waterfowler south of I-80.
I can tell you that pressure on the Blue Wing teal will move them quickly. Can't hunt every piece of water from morning to night an expect there to be any birds around. That applies to not just Blue Wings but all species including Mallards. Really need to figure out how to better manage the areas and the associated pressure on the areas. I do know that in Missouri the Blue wings have been piled up there in early September and without the earlier start to their season down there would have missed them. That would suggest to me that Iowa really needs to move up the dates if the really want to give opportunities to hunters for the Blue wings. Keep in mind in Missouri and other states afforded the opportunity to pursue Teal that is the only bird you can take during the Teal season.....no Woodies, Mallards etc. or you will be leaving the marsh with a citation!
I would suggest you rally to get more dates for a Teal only season in the South of I-80 zone that does not affect the normal/regular season # of days. If they are going to take away days from the regular season then skip it!