OF I agree with your sentiments, of course, but there are ways around these problems. In BA, for instance, if you don't want a Command on a 319 but would prefer to maintain your LH lifestyle (or whatever) you by pass your Command and wait until you are senior enough to qualify for a slot on the 777/380. You don't just NEVER get a Command. Same could happen in CX if someone would think a little out of the box. Have a Command Seniority number that would eventually allow you to get a Command slot on a base even though that may be a long time in the future. Your choice. Nobody does anything 'out of seniority'.