A big plus is probably that I saw the thumbnail and was interested. It seems like a fun idea and I really liked the artstyle of it.
Sadly I didn't know exactly how my choices of putting them in order had an impact on the game and so I felt better connecting them randomly to the tasks. I also didn't get when the people would disappear and when they would get a burn out. The visuals for the individual happiness was hard to indicate.
I also have a crash to report. The game sometimes broke down. My instinct tells me that it has to do with the process of dragging the linking while the person gets "inactive" or something similar.
But overall my suggestion would be to slow down the speed of the game in order to have time to understand some mechanics of the game and maybe add some more isuals to indicate certain processes a bit better.