I'm just going to assume this, just because there is no actual evidence to back up any of the complaints. None or very few to none of the complainers have gone into the beta trainer and actually tested out these decks that are supposedly ruined. Test your decks under the new changes, take stats, then complain if they are really really bad.
Quanta cap is good, and instead of cards that increase, why not cards to decrease, or even shut off production of an element for X amount of turns. Have one of the unmade shards with that effect, and have the quanta section as 12 individual boxes targetable and each time quanta would be gained, the caster of the shard instead gains quanta for the element the shard represents.
TEST, THEN COMPLAIN, not the other way around. Slowing some decks down by a turn or two is not a bad thing, especially when they are 4 turn killers.