I like where this is heading, but I found a small snag. If Quick Add Mode is turned off, the cards don't register as being "Modified."
When I enter cards, I always have the list sorted by Modified (with most recent on top, so I can keep track of where I am at as I go through my stacks.) When I add or update a card, it shows up at the top of the list. That's not happening with Quick Add Mode.
This is quite weird, there should have been no change in that behavior. Are you clicking Apply after changing things?