I don't think that Quicken should be 1/day; I can't see myself ever taking it. Saving one action once per day just isn't worth the cost of the feat, especially when it's in direct competition with Invisibility Cloak and Spell Penetration (for a wizard), which could be used far more frequently and to greater effect. Similarly for Sorcerer, it competes with Blood Magic, Bloodline Resistance, and Overwhelming Spell, all of which I consider superior options due to their increased usability.
I can understand wanting to limit its use, but it could be done in a way that doesn't make it too limited to pick. Couple options:
-Make it cost a Spell Point.
-Make it increase the level of slot required by 1, without any related bonuses (a la` PF1).
-Make it cost a Resonance point.