My suggestion relates to the workload view in Wrike.
Currently, tasks are stacked per user which works perfect, but is a little bit harder to quickly digest and understand when I want to see how much free time or space a person has.
It'd be great if the tasks could be more linear, and follow on from one another. (Terrible example image below)
Using a more linear view, it would allow me to see instantly if "person A has 3 hours free on this day" and I can allocate more work to them and easier see where there are gaps to fill.
Don't get me wrong, it works nicely now but I find it more time consuming to digest how much time a person has allocated when the only way of seeing it is the sum of the hours under each person (and when stacked it gets pretty crazy looking with a lot of staff to manage).