I'm used to attach a reminder to most tasks in order to deal them before due date, if possible.
Unfortunately it seems not possible to see from inside a task (or at least from a list view as custom field) if a reminder is already attached to the task.
So, it frequently happens that I attach, not only a reminder to a task, but two or three.
It would be nice to see if a reminder already exists before attach a new one to the same task, without be forced to browse every time all the remainder list that could contain dozen or hundreds of reminders.