I have a lot of Gold Foil soulbound cards that are pretty useless. I've thought about burning them for Glint but I have never had the heart to do it.

For Rebellion, I made Epic my focus. Common and Rare were easy to max out. Now I'm just trying to get Legendary as complete as possible in the time remaining.

I assume that all items crafted using the Crafting Station will always require Aura. So the more items that can be crafted the less Aura will be around.