I'm actually a bit curious what kind of cashiers at most stores would be considered for a promotion to GSA.
I can see some categories where I'd be a shoe-in, but also a few others where I might not be, but am unsure which of these metrics are most important for the position.
Example: I hate being idle. If I am working on a lane, and have no guests our standard procedure is that we are supposed to stand at the end of the lane and greet guests and usher them to our register to check them out.
I don't typically do this, if I have no guests, I zone the checklanes, I sort reshop (my bin first, then other cashiers bins), empty hangers (same with reshop), offer to dump the hangar bin if it is full and the cart attendant isn't around or we don't have one clocked in at the moment, check if other cashiers need bags, help other cashiers if they have their light blinking.
If I am at the service desk and have no guests and no mess to cleanup (ie. no items that need to be sorted, tagged, labeled, etc.) I do the same things. I much prefer having a variety of tasks and not doing the same thing all day so prefer working at the service desk to a lane. I also enjoy the "trouble" guests. I don't mean the rude ones who want to yell at you, I mean the ones with complicated orders, or who think their order will be complicated. I enjoy being able to make it right for them and trying to solve a problem for them. I also enjoy helping fellow cashiers when they are stumped. My conversion numbers are decent, not top of the store, but certainly meeting expectations.
The negative though I can see is that I have only filled out a vibe card once in a year and a half. It's not that I don't appreciate when fellow employees help me in some way, it's just that we all help each other constantly, and if I were to write a vibe card every time someone did so I'd be filling out 20-30 of them a week if not more, and that'd be extremely excessive. As such I have tended to avoid filling them out at all since otherwise it seems to be a case of favoritism.