I think that 717 will be senior. I'm going to go out on a limb and say it may % for % it will be more senior than the 88. I bet the senior positions are up there with the 320. Cuz you just keep hearing "I'm going to bid it for seniority..." Says everyone.
Really, pilots round these parts are just desperate for some semblance of technology...
even if it's just Southwest's trash.