I like Fractal as it is, and I don't see how it shuts down the creation of cards. If the reason your card isn't succeeding is because of Fractal, maybe you need to raise the quanta cost a little bit or make it like the Deathstalker, where its ability is only used when it does damage.
That's not always the case.
Consider, say, my Artic Hunter idea. Long story short, it packs a huge punch for its cost, but on the downside, it summons a free immaterial creature for the enemy, whcih can weaken it.
With fractal, Artic Hunter is deadly. Like, it can kill so fast the free immaterial creature spawned into the enemy's field is COMPLETELY useless.
Without fractal? I can't nerf Artic Hunter at all without it being too underpowered.
Yes, you can build around Fractal. However, it limits card ideas severely. SoR is the same way. You can't make a really good ability with a high cost because SoR would just throw the high cost aside.
I agree, though, Fractal is a very interesting card. However, I think there should be a
new passive ability: Individuated. It renders the creature un-fractal-able.