Honestly its all about orgainzing into themes
Main single target and things you use often on bar 1
Aoe on 2nd (can throw in others)
3rd cross bar for things you rarely use. Or things that u pop that stays out ie summons,stances, etc and long cd moves
The switch on 4 with lb,sprint etc and that covers all abilitys on any job easily.
Best if all since they on different crossbars you can easily move over based on your combat situation (i can do this in my sleep and never get one wrong)
I think many ppl rather see it all at once but i dont it gets all clutter like that.
We have a total of 12 crossbars we can swap to in miliseconds and move freely with controller. I dont even use the full first 2 bars