I'd just like to reinforce the suggestion of sorting cards by rarity on Nexus. This would surely help a lot. Also sort by number of copies you have would be interesting.
The new set system wasn't that bad at all. In fact I was tired of wearing that GIANT kongregate sign, now I can wear something cooler and still get the bonus
 "Clash of the Dragons"){kind=icon}
 "Anti-Idle: The Game"){kind=icon}
 "Toss the Turtle"){kind=icon}