My guess is a removal of the ban on through ticketing in fairly short order which would allow DAL-ABQ-LAX etc, with a phased out repeal of the whole deal within three years. May be some gates at DAL closed as part of the deal.
I have heard that somewhere before about repealing Wright and then closing gates at DAL to restrict growth. If it came to that, would Southwest be forced to give up gate space to any new entrant to the airport? If not, it seems closing gates would only help WN because they would have an even stronger monopoly on DAL.