Cannot estimate completion time for translation imports in per-package queue pages

In situations where the import queue is very long (as it is at the moment), the per-package import queue pages such as https://translations.launchpad.net/ubuntu/intrepid/+source/debian-installer/+imports?field.filter_status=APPROVED&field.filter_extension=all would be more useful if they displayed each item's position in the global import queue, rather than just the date (and no way to guess roughly how long it can be expected to take to get round to the item).