I think there are plenty of 73N's around that they could replace them with. We have a few that we do not want/ option that still need to be picked up.
T-this rumor of AAI shopping the jets has been around longer than their merger. SWA wants the 700 and 800 not two jets with a similar seat count. Add to it they do not want to reconfig em.
Suffice to say it is an option, and DAL looks at all options.