I don't have enough bitizens, and it occurred to me that my strategy of staffing several levels with two bitizens might not be as efficient as staffing three, and leaving some levels empty.
Assuming I have decent bitizens and they all are in their perfect job in either case, which is better:
Staffing three levels with two people each.
Staffing two levels with three people, and leaving one level empty.
Best Answer
Indeed, the optimal arrangement of workers may not be to spread them out evenly. It depends upon the levels and dream jobs as well, and how often you are playing the game.
In general, if a third tier item has a big stock capacity, it would be much better to have a worker there than in a low stock count, first tier spot. This is particularly true if you aren't constantly there looking after the game to restock.
When you don't have enough residential capacity to staff everyone, leaving a shop empty to better fill another one is often a good plan. A shop like "Workout Center" doesn't have much capacity and takes frequently looking after to restock, so that is a natural one to leave empty.