My idea was to total the amount of dailies together on all your characters that could do writs and be able to do them all on one character instead and have just have a multiplier for each tier totalling how many are on the account of that certain tier so you wouldn't be able to get max tier resources from the basic tier dailies
So say all your 15 chars apply for all max tier writ dailies for all 7 a day just have one character be able to turn in a multipler of those 15x in one go rather than having to keep relogging every day, also be able to pick them up as well if you do writs every other day