Slots - batch of tasks within a time period (Different than Routines)

A hybrid between a task and a routine (hopefully upcoming feature) where you can allocate a slot say 4h to your morning in which you simply dump a list of tasks that are not time specific. Instead of having a specific time for each separate task, I personally sometimes know I have to do many things in one morning but I would like to choose the order I do them in and not be constrained by task-specific timeframe.