That sounds great and would work perfectly. I guess the real question is, how likely is it to get the based where you want and then actually maintain that base.
Well that depends on what life throws you. When I got hired at Express, there were bases in LAX and ONT, with the LAX flying having TONS Of SLC overnights (where I live). I figured it'd be a super easy commute to either city and I'd end up with the easy life. Also when I got hired, those bases were ultra junior.
Flash forward to the end of training, I got stuck in EWR and ended up doing a cross country commute for 14 months. If I had been in the class before mine or the class after, I would have been sitting in LAX or ONT (yes, you read that correctly, a few classes AFTER mine were went to LAX/ONT/IAH when I was forced to go to EWR. I was mighty pissed about that one). Awesome.
It's just what life throws you sometimes.
When you are promoted/upgrade, it is normal to move to a new base that flys that equipment correct? Then you start all over at the bottom of that list, on reserve?
Say you were a CA of a 737 and were offered to upgrade to CA of a 757, not sure if that is possible, just a hypothetical, could you refuse so you could hold your line, stay at your base and not go back down to reserve or is it not really your choice?
You are not offered upgrade, you bid upgrade. When you are able to hold it, you go to class. There are career FO's out there that NEVER upgrade, they simply don't want to take the hit in QOL and make enough money as is.
As an example, my bid looked something like this:
LAX - CA (long jet/short jet)
ONT - CA (long jet/short jet)
IAH - CA (long jet/short jet)
SAT - CA (long jet/short jet)
EWR - CA (long jet/short jet)
CLE - CA (long jet/short jet)
LAX - FO
ONT - FO
IAH - FO
SAT - FO
EWR - FO
CLE - FO
That would mean that my first bid was LAX Captain in the long jet (there were separate pay scales for the EMB-135 and the EMB-145 at the time). My second bid was LAX Captain in the short jet, and so on. Only until I got to my 13th preference in bidding did I get to ANY FO slots.
Now why did I bid like this as a new hire? Because I didn't want to miss an opportunity to hold captain down the road because I didn't bid captains slots first. Because I of course couldn't hold captain anywhere because I was just hired, the computer went down the list until it found something I could hold, which happened to be EWR FO, which you may notice is my 17th choice out of 18 possible options. Such is life for a junior FO, you kind of take what you can get.
But to wrap all that up, you're never offered anything by the company. You make requests of the company, and they will grant them seniority order.