I agree there could be more filtering options. The one's you've suggested would be useful for sure. I would love to just be able to hide any cards I don't have at max level and stuff like that as well.

What I do like is the new number filtering. If I'm working with only, say, 4 mana left to fill, it's nice to be able to look at just the cards with mana costs of 1-4.

What I would like to see for these number filters is a "clear all" button.