enjoy an F/O roster with seniority and all of the benefits that entails
That is 99% of the reason for not taking command. Even if I didn't have to do a command course.
If suddenly 4 bars turned up in my mailbox wrapped in a standard junior CN roster, I would just walk straight upstairs and hand them back.
I'm not going to endure 5 years of sh!t rosters, just for an extra 14%.... its that whole "work to live" principle.