Gmail – What happens when you use your Google Account for Trello

If you'd like to add several members to a board or organization, you can add all of their email addresses in the "Add Members..." dialog, using commas to separate them.

There are only up to 5 or 6 lists that can be viewable at the same time.

So the two options would be to use:

• A Card as the feature and the description for user stories
• A List as the feature and Card for user stories

In the first option I would imagine it would have to be something like

Here you would need to add up the points manually (Or create a userscript/extenstion see next option).

In the second option you can use this Chrome Extension to take care of your user points and let cards handle user stories. As you said this can be come unmanageable with next up/in progress/review/ so then you would have to keep the tracking cards to the left and the feature to the right on your board. When a new activity appears on a board ensure it is "bubbled" to the left as the most recent feature update. Assigning members can also ensure nothing is forgotten.