I did not vote in the poll, because I feel the results are very two-sided. Partially, it would sure to get rid of the most annoying (and boring somewhat) decks floating around - which are, with False God powers, are really hard to take on sometimes -, but on the other hand, Quantum Towers and Supernovae can be also the spine of some very interesting, even creative and original decks. Although sadly, there's not much experimenting around lately, as I see it, especially in the Arena.
The best target(s) for a possible banning, in my opinion, would be the shards; as there is a reason why False Gods too are prohibited from using them. It is a solution that would cripple some of the decks in subject too, though, it would still leave a notable amount untouched.