I've collected every card an NPC drops that I have access to, and some of them like Lewena (sp?) in the Gold Saucer took weeks to defeat for all their cards, and I did it happily.
On the other hand, getting cards to drop from dungeons seems to me to be an exercise in pointless depression.
The dungeon cards to me seem designed to drop to players who are frequenting the places on roulette. If it's your only reason to be running the place then mostly you re going to be disappointed.
RNG is RNG. and it comes in different flavors. I like NPC RNG and hate Dungeon RNG. Others might feel the exact opposite.
I was thrilled when they made all the 2.x cards available through an NPC, and have hopes that over time the 3.x ones will be shifted at some point. That was a fair solution. They were dungeon exclusive for a good bit, then made available by both drop methods.
I /salute anyone who has the patience to dive into a dungeon over and over for a card.
