How long until you can know aether is involved or not though?
Every quantum tower is going to produce aether quanta, so you would never know if this was going to come in or not. Any deck that uses elemental towers, even, you would have to wait way too long to take action before you found out if it was just a bad draw or if there really is no aether.
Not that it really matters for any deck that depends on creatures to do the majority of damage. Decks that don't use spells/permanents for damage will be unable to beat it, no matter if they wait or not.
And, again, that makes me want to say that I love the idea, but we might have to wait until the game develops more before we can really say its a good idea. Too few elements can deal with it.
Aether can't deal damage around it or destroy it. Air can't either. Earth can't do anything about it alone, only with gravity. Light can't get over it. Time can do nothing.
Darkness has steal or life drain. Entropy has BE, or could make mutants with destroy. Fire can blow it up, fire lance, or grow over it (but could be subject to a scary TU after the creatures start getting big, without need for a second element). Gravity has lots of momentum that could be used, and can destroy it with earth. Life can grow, but, again, TU could be a scary thought. Water can use ice lance to damage though it.
Death has poison, which could be deadly or could be nearly ignorable, depending on the exact decks.
7 elements can go though or around it, one is more or less, though, and another 100% requires a second element. Two of them will be using growing creatures (both likely with a second element), which is very vulnerable to a mono aether with this and TU. One of them will require either luck (entropy mutant with steal/destroy) or a 2 card combo.
That leaves 5 elements that can do nothing to it, other than not play creatures, and those can't do anything without the creatures. That's not strategy, at least not with the current card pool.