I would be interested to see if Southwest wanted any of the 'scraps' (for lack of a better word). I have been reading that 'Nuts' book and they seem to be more into profitability at the expense of a larger market share. I doubt they would be interested in flying anything other than the 737 as well.
This merger talk is certainly interesting to watch play out. I am going to be interested in what actions Frontier will take as well.