I do not agree that the one-turn delay makes up for the removal of duo-dependency.
Removing duo affects your entire deck, not just the cards being played. Now, you have complete freedom on deck design with the introduction of SoP, and at the measly cost of 1 generic quanta. Add to that the ability to buff multiple scorpions in a single turn, with only 1 card (Fire Storm) in the game that can efficiently counter it on the following turn (which is when it must happen). Further, Time already has the potential for mass creature generation, more so with the SoR allowing for two immediate Pharaoh Scarabs in its current version, proving a large amount of utility with a single card, all within a single element that isn't even SoP's primary element. I'd venture to say that SoP is stronger for Time than it is for Water.
Mass effect cards quickly change the face of the game. Generally, a generic cost card is not a good idea for a mass effect, especially when it's cost is as low as it is for SoP. Dune Scorpion definitely needs its cost increased, though after writing this, I'm wondering if there is a better effect that the +1/0 for all. I'm really concerned about the long term effect it will have on the game. A mass creature buff would be better suited to a specific element.