It would be a huge time-saver if Asana allowed the use of a People custom field to dynamically assign tasks via rules. Currently, rules only let you assign tasks to the creator or the person who triggered the rule, which is quite limiting.
Right now, we are having to manually build out hundreds of rules to assign tasks based on brand logic (e.g., If brand = X, assign to Y). It would be much more efficient to set stakeholder roles using the People field in a task template, and then have a rule assign the task based on that field—rather than hardcoding individual rules for each scenario.