But we have critical strikes and varying skill hits too. I know other MMOs with those. I know other MMOs with procs as well. You press the same button and even if you don't crit you get slightly different numbers each time. Crits randomize it further. No job in this game gets the exact output every time for all of their skills. RNG is a part of RPGs just as much it is a part of card games.
What I find most important is how much the RNG affects your success. Having crits be 10 times as strong as regular hits would be intolerable. Having attacks do any damage only when they crit would be intolerable. But because you still get roughly the same kind of hits each time, you can still be successful even if your heals / damage spells have minor fluctuations. RNG doesn't have to mean that you have no control over your success.
Healers get randomly reduced MP costs and cast times and increased heals and yet those don't bother you as much as the cards do. I'm going to take a guess and say that's because you feel you still get healing done no matter what but with cards you feel like you either get a benefit or you don't. I don't like binary chances either (like getting a loot drop or not) but AST cards are not win or lose. You win every time, but in unexpected ways. Just like in card games where you might draw a good or a worse card but it's still a card nonetheless. And at the end of the day, even if you draw nothing but Ewers and Spears all dungeon you can still heal just as well as any other healer.
I feel like this would be a good fix if any is needed. At the moment it is not worth replacing SCH with a Noct AST, which means that Diu AST / SCH would remain a better comp than Diu AST / Noct AST even if cards were stackable.
