I seem to get the same handful of writs for every crafting station every day. It appears to be based on the crafting level of that character, at least in part, because my character who hasn't developed her crafts as far gets different ones. And when I put points into her crafts, her recipes change some.
The problem with this is that I am starting to run out of some mats, because the writs are only using the same mats every day, while other mats are building up and not being used. Why can't there be a variety of all the known recipes for these?
The increase in inventory slots is manageable on a few extra added writ quests ... even for players without ESO+. Players (including this player) are getting a ton of inventory slots back when the Markarth DLC drops on November 2.